traveller def fluid reviews

• Search forums

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

• 4.5 Gen (2019+ Ram HD)
• 4.5 Gen General Discussion

Tractor Supply (Traveller) DEF

• Thread starter phatboy64
• Start date May 19, 2024

Well-Known Member

• May 19, 2024

What s the deal with this DEF, at $9.99 I am thinking about using it. Any feedback on it? I am going to spend most of the summer pulling a trailer up and down the east coast so trying to save some money where possible but not at the expense of going into limp mode due to funky DEF…  

You will have no problems with it as long as it has not been on the shelf too long.  

Is there a decipherable date code on the box?  

phatboy64 said: Is there a decipherable date code on the box? Click to expand...

phatboy64 said: What s the deal with this DEF, at $9.99 I am thinking about using it. Any feedback on it? I am going to spend most of the summer pulling a trailer up and down the east coast so trying to save some money where possible but not at the expense of going into limp mode due to funky DEF… Click to expand...

I switched to the Traveller DEF about 1k miles ago, no issues. Picked it up from our local Tractor Supply. Prior to this I ran the Super tech brand from Walmart with no issues. The lines and crowds at Tractor Supply are much preferred, price is the same between the two.  

I have some DEF that is three years old. It is clear and the refractometer shows the proper concentration but have avoided using it. So are we saying that as long as it meets that criteria, it is good to use?  

I used $6.99 a box DEF from Rural King for years with no issues and use the same product in farm tractors.  

I think the Walmart DEF is a bit cheaper, and always clearly labels the date it was packaged. The last batch I bought was three weeks old. Never had a problem with it.  

You're doing it wrong

I always use the cheapest DEF when i had the system installed never an issue as far as cheap DEF concentration or contamination  

DEF = DEF, there’s nothing fancy to it.  

I recently used it, I use the practice of getting more when I’m at 1/4 tank and put one box to bring me roughly 3/4 tank. I got to just about 1/2 tank and got the dreaded DEF p202e light. I cleared it and have driven 300 miles without it returning so not sure what caused it. The box wasn’t old cause the guy was saying how their DEF flies off the shelf at 9.99. Hopefully there’s no issue  

I've always used tractor supply and walmart def no issues.  

Thanks for the feed back. I went ahead and picked up a jug, I didn’t realize it at first but it was the “premium“ version, it was $4.00 more. Next time I will try the $9.99 one.  

Active Member

• May 20, 2024

CdnHO said: I have some DEF that is three years old. It is clear and the refractometer shows the proper concentration but have avoided using it. So are we saying that as long as it meets that criteria, it is good to use? Click to expand...

I have been using the Walmart brand Def (super tech $8.88 ) for the past 6 years in my Duramax and my Cummins without issue. I prefer jug Def over bulk at truck stops, most I’ve seen have Crystal buildup that I don’t want contaminating my tank.  

UpNover said: most I’ve seen have Crystal buildup that I don’t want contaminating my tank. Click to expand...

DrTron said: The 32.5% solution is pretty close to the solubility of urea in water. That can exceed solubility in low temperatures. So if your DEF stored in a 35 degree shed has crystals at the bottom, that's just precipitated urea. That won't contaminate the tank if the tank is heated, which I think they are (I don't drive a Diesel). It'll then just go back into solution. Or store it in the house for a day to let it warm up, crystals should dissolve. Click to expand...

UpNover said: I have been using the Walmart brand Def (super tech $8.88 ) for the past 6 years in my Duramax and my Cummins without issue. I prefer jug Def over bulk at truck stops, most I’ve seen have Crystal buildup that I don’t want contaminating my tank. Click to expand...

DrTron said: Yes. Chemist here. DEF is nothing but a 32.5% urea solution in water. Urea is a pretty stable chemical itself, so I wouldn't expect any degradation even after 3+ years. Especially if verified by refractometer. Click to expand...

Users who are viewing this thread

• Forum Listing
• Marketplace
• Advanced Search
• Duramax 3.0L I6 Diesel

Traveller def fluid?

• Add to quote

Brand New 2023 3L duramax owner here, been researching def fluids, and noticed Tractor Supply is selling "Traveller Def Fluid" for $10 -2.5 gallon. Is this stuff any good, and are there warranty considerations if used? Thanks  

As long as it meets the ISO spec number in the diesel supplement, you can use it. DEF does have an shelf life -- so if it's not sale because it's old.... If you are near a truckstop, you they will have pump def in the truck lanes. No messing with jugs, and you can get if full without having a part jug left over. Also makes it so you can calculate def mpg the same as hand calculating fuel mpg. DEF usage will be about 2% of fuel usage -- so about 2 gallons of DEF used for every 100 gallons of fuel.  

Ok, on a 2023 GMC, there will be no notifications that DEF fluid needed?  

Yes, there are warnings. They are described in the 3.0L diesel supplement. (you can download a pdf copy from GM's website if you prefer electronic to the paper copy that should have been provided) There will be a def low indicator on the dash. If on, it also gives a message. The is an 'level indicator' in the dic. (Imho, not accurate to be called a gauge) it's also shown in the manual. There will be 'range to empty' warnings. Around 1000 miles it should give one, and below 300 it should update at every start. When it gets to empty, there will be 'miles to speed limit' warnings.  

Anything in your owner's manual?  

Found that manual! Thanks again!  

• ?            
• 187K members

Top Contributors this Month

• Electronics
• Lawn & Garden
• All Categories
• Expert Shopper
• Gift guides

BestReviews is reader-supported and may earn an affiliate commission. Details

Best Diesel Exhaust Fluids

Popular brand and manufacturer of diesel exhaust fluid with a product offered at a good price.

Successfully creates safe nitrogen gas and water vapor in exhaust. This product meets all EPA regulations regarding selective catalytic reduction (SCR) engines. Gives you a good value versus other exhaust fluid options. Ships with a fill tube.

Jug may leak if fill tube is not attached properly, so you may want a funnel.

This DEF offers a nice blend of improved engine performance and a value price, making it a solid deal.

Compatible with all SCR equipped engines, this fluid works well to limit nitrogen oxide emissions. Tested for quality. Comes with a lengthy nozzle that simplifies tank filling. You'll get 2.5 gallons for a budget-friendly price.

The engine light came on in some vehicles after use.

Uses only the highest-quality materials to ensure compatibility with all federal emissions requirements.

Works as advertised to help maintain SCR diesel engines. Contains all of the certifications required for a product like this. Nicely designed container means you don't have to worry about leaks. Trusted brand.

A little more expensive than some other DEF products in this bottle size.

Despite some quality control problems, this DEF is a good choice for Ford owners.

Made especially for Ford diesel-powered vehicles. Meets all required standards for treating nitrogen oxide emissions in heavy-duty diesel engines. SCR approved. Nozzle is designed to reduce messes and spills during application.

Some quality control issues reported including broken seals and missing nozzles. Pricey.

A popular DEF that's formulated for trucks, SUVs, and other diesel vehicles by GM.

Formulated with quality deionized water and high purity synthetic urea that are safe for diesel engines. Popular product is highly effective at reducing NOx gases and boosting engine performance. An ideal choice for GM vehicles.

No extension nozzle. A few reports of leaking bottles. Pricey for just 1 gallon.

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

Table of Contents

Buying guide for best diesel exhaust fluids.

Updated September 2023

If you’re new to vehicles that run on diesel fuel, you’ll soon discover they’re quite a bit different from standard gasoline-powered vehicles, beyond the difference in fuels. For example, you might need to change the oil and fuel filters more frequently. Because a diesel engine burns fuel at a higher temperature, you might have to use an exterior heating system in the wintertime. But the most obvious difference is that you need to add diesel exhaust fluid to a separate tank on the diesel vehicle to remove harmful emissions and enable it to run properly.

Purchasing the best digital exhaust fluid for your situation depends on a few criteria. At BestReviews, we can help you better understand the differences among diesel exhaust fluids, so you can find the best one for your vehicle.

Our shopping guide gives you plenty of helpful information about diesel exhaust fluids, so you can make sure your diesel vehicle runs properly.

What is diesel exhaust fluid?

Unless you have experience with diesel vehicles, you might not know much about diesel exhaust fluid (DEF). This bright blue liquid is a mixture of roughly two-thirds deionized water and one-third urea. The color helps you distinguish it from gasoline or diesel fuel.

You add DEF to your vehicle as needed. It goes into a separate tank than the diesel fuel and runs through the selective catalytic reduction (SCR) system. Diesel vehicles emit dangerous nitrogen oxide (NOx). DEF breaks down the NOx emissions into nitrogen and oxygen, elements commonly found in air.

The DEF you use must meet ISO 22241, which is an international standard that determines the quality of the product.

Who needs DEF?

If you have a 2010 or newer model vehicle that runs on diesel fuel, it almost certainly needs DEF. A vehicle that needs DEF is designed so that it won’t operate properly without DEF in the tank.

If you’re unsure whether your vehicle requires diesel exhaust fluid, look for a special DEF tank. This tank is near but separate from the diesel fuel tank. DEF and diesel fuel should never mix.

What happens if you run out of DEF?

Because diesel exhaust fluid is an expensive add-on, and because it can be a hassle to keep on hand, it might be tempting to run the diesel vehicle without filling the DEF tank. However, the vehicle manufacturer is required to design the vehicle so you can’t.

The Environmental Protection Agency (EPA) sets the rules that vehicle manufacturers must follow regarding the use of DEF. Under these rules, dashboard messages and warning lights warn the driver when the DEF tank is running low on fluid.

An empty DEF tank limits the vehicle's performance to speeds of up to five miles per hour until the tank is refilled.

What happens if you put fuel or DEF in the wrong tank?

Let’s just say you don’t want to put the wrong fluid in the wrong tank! It will result in a significant repair expense for you. Be very careful when adding either diesel fuel or DEF to your truck.

Diesel fuel in DEF tank: There are safeguards built into the system to prevent you from putting diesel fuel into the DEF tank. The diesel fuel nozzle is larger in diameter than the entry hole of the DEF tank, ensuring that you can’t accidentally fill the DEF tank with diesel fuel using the nozzle at a gas station. Also, the DEF tank often has a bright blue cap that will help you avoid placing diesel fuel in this tank. However, if you’re inadvertently put diesel fuel in the DEF tank, you need to have the system repaired immediately. Even a tiny amount of diesel fuel could significantly damage the system that uses DEF.

• DEF in diesel fuel tank: You don’t have any built-in safeguards against accidentally adding DEF to the diesel fuel tank other than using common sense. If you inadvertently place diesel exhaust fluid into your diesel fuel tank, your vehicle won’t operate. The entire fuel system will need to be professionally cleaned and repaired.

How DEF brands differ

It can be frustrating to pick the right DEF for your vehicle. All diesel exhaust fluid must have a urea concentration of 32.5%, so how different can the brands be?

Impurities: To meet EPA standards, DEF must contain a limited percentage of impurities such as iron, zinc, and aluminum. These impurities can enter the DEF if the manufacturer uses poor-quality deionized water, for example. Too many impurities in the DEF could cause the SCR system to fail prematurely. A cheaper brand of DEF might be at the edges of the impurity limits, while a more expensive DEF might have many fewer impurities than required by the EPA.

Urea: An approved brand of DEF must use pharmaceutical-grade urea rather than agricultural-grade urea, which might have impurities like biuret in higher levels than higher-quality urea.

EPA standards: To call itself diesel exhaust fluid, the product must meet all EPA standards, especially ISO 22241. If you find a cheap product that claims to be diesel exhaust fluid, but it doesn’t meet ISO 22241 standards, don’t purchase it. Such a fluid could damage your vehicle’s SCR system.

• Manufacturer recommended: When looking for a brand of DEF to purchase, check your vehicle owner’s manual. It might recommend a particular brand, and you should follow this recommendation. If you don’t have a manufacturer recommendation, only select a product that meets ISO 22241 standards to protect your SCR system.

Diesel exhaust fluid prices

The prices for DEF aren’t set in stone and fluctuate over time depending on market conditions, supply and demand, your location, and the size of the container. You can expect to pay between $2.50 and $8 per gallon for DEF.

One- to five-gallon containers

You can expect to pay between $4 and $8 per gallon for containers of this size.

55-gallon drums

When you buy more, you can expect to pay a little less, between $3 and $5.50 per gallon.

275- or 330-gallon containers

Commercial operations will pay prices similar to that of diesel fuel, between $2.50 and $4 per gallon, for large quantities of DEF.

Q. Is DEF a diesel fuel additive?

A. Technically, diesel exhaust fluid is not an additive because it isn’t mixed with the diesel fuel. Instead, the DEF is poured into a separate tank on your diesel fuel vehicle. The SCR system built into the vehicle then applies the DEF to the exhaust system as needed to eliminate NOx emissions.

Q. Why have I never heard of DEF or SCR? I’ve driven pickup trucks most of my life.

A. The use of diesel exhaust fluid in a selective catalytic reduction system has only occurred in the last several years. If you’ve always driven older trucks, you haven’t had to use DEF because your trucks don’t have an SCR system. This system began appearing on diesel vehicles with the 2010 model year.

Q. How do I know if my vehicle needs diesel exhaust fluid?

A. If your vehicle uses diesel fuel and has an SCR system, you need DEF. Among vehicles commonly aimed at consumers, pickup trucks and some sport utility vehicles (SUV) run on diesel fuel, although large sedans occasionally use diesel, too. A vehicle with an SCR system has a special tank for the diesel exhaust fluid. This DEF tank, separate from the diesel fuel tank, is usually distinguished by a bright blue cap.

Q. How does the selective catalytic reduction (SCR) system work?

A. The system uses chemical reactions between the diesel exhaust fluid and the vehicle’s exhaust to reduce harmful emissions. The SCR system uses an injection system to deliver the diesel exhaust fluid into the vehicle’s exhaust system. The DEF is then converted into ammonia by the SCR system. Once the ammonia is mixed with the NOx emissions, it breaks them down into safe emissions of nitrogen and oxygen.

• Best Inflatable Paint Booths
• Best Wireless Subwoofers
• Best Noco Genius Car Batteries
• Best Tractor Seats
• Best Breathalyzers
• Best Car Tires
• Best Car Seat Cushions
• Best Windshield Washer Fluid
• Best FOXWELL Car Scanners
• Best Motorcycle Glasses
• Choosing an RV portable waste tank
• These 14 emergency supplies should be kept in your car this winter
• Everything you need to winterize your RV
• 10 bestselling jump starters worth considering as winter approaches
• The viral Chemical Guys kit is better than a car wash. It's $25 off at Walmart
• The ultimate pre-departure road trip checklist
• Best heated car seat cover
• Best portable electric car charger
• Best cargo box
• Best new car accessories
• Best 30-amp RV surge protectors
• The 6 best car heat shields to protect your upholstery
• How to change a flat tire
• Best chrome wheel cleaners
• How to wash your car
• Best Husky Liners floor mat
• Best WeatherTech floor mats
• 11 best tire racks
• 15 best car jacks
• Best car trash bag

We use cookies and similar technologies to run this website and help us understand how you use it. ( See our policy ) ACCEPT

•   Promotions
•   My Garage

Related Products

Search for products "{{formData.query}}"

Diesel Exhaust Fluid: Everything You Need to Know

Diesel engines have been around for well over 100 years, but in the last decade there have been significant advancements and improvements with their emissions systems. In order to keep soot and other harmful contaminants out of the air we breathe, several different systems are installed onto modern diesel engines, and one of the most important relies on a liquid called diesel exhaust fluid. If you drive a diesel pickup that was made in 2011 or newer, you are well aware that every so often you have to go to the store and buy a box of diesel exhaust fluid and pour it into the truck, but what exactly does it do? Why do you need to keep adding diesel exhaust fluid do your truck? What would happen if you run your truck out of diesel exhaust fluid? All this and more will be covered today as we discuss everything you need to know about diesel exhaust fluid.

What is Diesel Exhaust Fluid?

Diesel exhaust fluid is a clear liquid you can buy at gas stations, supermarkets, auto parts stores, or even big box home improvement stores, and it usually comes in 1-gallon jugs or 2.5-gallon cardboard boxes with a plastic liner inside. Depending on where you buy it, diesel exhaust fluid usually costs around $15 for a 2.5-gallon box (around $6 per gallon), but if you buy it at the truck stop dispenser, it can be a little cheaper. It’s called DEF for short, but the very first thing you may be wondering is what on earth is diesel exhaust fluid, and the answer is quite simple: it’s a fluid that gets injected into the exhaust system of your truck to help reduce pollution. We’ll cover exactly how it works in a minute, but if you are wondering what diesel exhaust fluid is made from, once again the answer is simple: it’s mostly water. In fact, 67% of diesel exhaust fluid is deionized water, and the rest is made up from something called urea.

If you paid attention in your high school science class, you’ll likely remember Urea is a natural byproduct of the metabolic process that takes place within a cell, and its abundantly found in nature in urine from mammals. Yup, you read that right, urea is found in pee. While your first reaction might be that of shock, don’t worry, DEF is not actually made from urine collected on the farm, but rather its synthetically derived in a laboratory somewhere, although from a chemical standpoint, it’s pretty much the same thing.

What Does Diesel Exhaust Fluid Do?

Diesel exhaust fluid plays an important role in the emissions system on your diesel engine, but to better understand exactly what it does and why we need it, we need to provide a little context.

When diesel fuel is burned inside your engine it creates heat and horsepower. The horsepower is used to move the vehicle along, and the heat is dealt with through the radiator, but there are also several other unwanted byproducts that are a result of the combustion process. Because diesel fuel is a hydrocarbon, when it’s burned there are two major pollutants that come out of the tail pipe of the truck, which are nitrogen oxides (NOx) and particulate matter (PM) which is basically soot or black smoke. In the olden days, a diesel engine would simply release these nasty byproducts into the atmosphere, but in order to help keep the planet healthy, both byproducts need to be safely dealt with. Starting in 2008, all road going diesel engines were fitted with a diesel particulate filter (DPF) that was responsible for trapping the soot that would normally leave the tail pipe, but to properly deal with the invisible nitrogen oxides, a new system was introduced to most diesel pickups in 2010 that was called Selective Catalyst Reduction, or SCR.

Engineers discovered that with the right chemical reaction, you could break down the dangerous NOx compound into its two much less harmful base components of nitrogen and oxygen. The chemistry is a bit complicated, but the short and sweet version is that when you inject urea into the exhaust stream in the presence of enough heat, the urea first turns into ammonia, which in turn breaks down the nitrogen oxides into nitrogen and oxygen, and you are left with essentially harmless gasses exiting the tailpipe of a diesel truck. In order to make the SCR system work, there are several components installed on the truck. There is a tank that holds the DEF which usually will store around 5 gallons, a heater to prevent freezing in cold weather, a pump and lines that deliver the DEF into the exhaust system, and finally an injector nozzle that sprays the precise amount of DEF into the exhaust when it’s called for by the engine control module.

How Long Does Diesel Exhaust Fluid Last?

There are two ways you can answer the question of how long does diesel exhaust fluid last, and the most common interpretation of the question is how many miles of driving can you get from a full tank of DEF? Of course, the answer depends, because much like fuel mileage, your DEF mileage will vary depending on the load of the engine. Cummins published a study back in 2010 that stated your DEF mileage is directly proportional to your fuel consumption, but you only use about 1 to 3% as much DEF as you use diesel fuel. For example, if you have a truck that gets 20 MPG, you can travel approximately 1,000 miles per gallon of DEF used. Given that an average tank holds about 5 gallons, this means you only need to fill your DEF tank once every 5,000 miles. This of course is a best-case scenario because most trucks won’t average 20 MPG for 5,000 miles in a row, but in real world conditions, a full tank of DEF in a pickup truck can last 3,500 miles while driving empty, or 1,000 to 2,000 miles of towing. While the per gallon cost of diesel exhaust fluid is a little more expensive than diesel, because so little is consumed, your truck’s DEF consumption will only cost you a few pennies for each mile you drive, even if you’re towing.

If you buy DEF in bulk, because of how little it gets used, it may end up sitting around for a few months before you need to pour it into the truck, so the next question is how long can you store DEF, and can it go bad? Once again, the answer depends, but if you are not planning on pouring your diesel exhaust fluid into your truck right away, its best to store it in a cool dry place. If you keep DEF away from direct sunlight and store it at temperatures less than 75°F, it can last for up to two years. If the storage temperatures get a little warmer than 75°F, its shelf life will be cut down to about a full year before it goes bad.

What Happens When You Run Out of Diesel Exhaust Fluid?

Because diesel exhaust fluid is a consumable item just like diesel fuel, it is possible to run your truck out of DEF. Most trucks have a DEF level gauge on the instrument cluster that will tell the driver how much exhaust fluid is left in the tank, or if no gauge is installed there will be at the very least a warning light that will come on if the tank is running low.

Let’s say for conversation’s sake you ignore the warnings and try to continue driving your truck once all the DEF has been used and the tank is empty, what would happen? You might think it’s not a big deal and you could continue along your way without a worry in the world, but your truck’s electronic control system is designed to not let you drive without any DEF. If you try and push past the warning signs, the maximum speed of your truck will be slowly reduced, usually starting at around 50 MPH at first, but as you continue to drive without DEF, your top speed can be lowered to just a few miles per hour. Of course, there will be plenty of warnings ahead of time, but once your truck is out of DEF, you’re not going anywhere except to the side of the road, so make sure you keep an extra jug of DEF on hand if you’re going on a road trip.

Best Diesel Exhaust Fluid

When it comes time to buy some DEF for your diesel truck, you will be faced with a few different brands and options. While in theory all diesel exhaust fluid should be the same, there are some differences in quality, and if your truck gets a bad batch of DEF, it can cause problems. There are sensors inside your DEF tank and lines that will look for contamination, excess water, or even dirt, and if they detect a problem, you truck may enter a speed limited mode just like if you are out of DEF.

An inexpensive insurance policy against contamination is buying a quality DEF. The most popular brand of DEF is Peak Blue DEF (which I’ve used exclusively for 75,000 miles on my L5P with great results), but you can also purchase diesel exhaust fluid from your dealership parts department if you want to stick with an OEM recommendation. Basically, just stick with a brand name DEF and you shouldn’t have any issues.

DEF Tanks, Pumps, and Other Product Recommendations

While for the most part, your DEF system should be maintenance free for at least 100,000 miles, occasionally a part of the system can fail and will need to be replaced. Just like most other parts on your vehicle, replacements are available from aftermarket brands as well as OEM manufacturers, so whether you need a genuine Bosch DEF injector for an LML Duramax or a Dorman Diesel Exhaust Fluid Heater assembly for a 2011-2016 Powerstroke, Diesel Power Products has what you need to keep your SCR system up and running properly.

DEF Tank Relocation for Longer Range

Sometimes components in the diesel exhaust fluid system on your truck may get in the way of other modifications, and one such example is for the 2017 to 2022 Ford Powerstroke cab and chassis trucks. Many owners use their rig for long distance hauling and a larger fuel tank is a necessity, but on the Ford cab and chassis, the DEF tank is too close to the fuel tank to allow for an oversized tank to be installed. Titan Fuel Tanks has a great solution that will allow you to relocate your DEF tank from the inside of the frame rails to the outside, which opens up enough space to install a Titan 40- or 54-gallon tank on your Powerstroke which will greatly extend your range.

All the Diesel Parts You Need at DPP

Whether you need to make repairs to your Diesel Exhaust Fluid and SCR system, or you need any performance parts for your late model diesel truck, the one place you need to check out is Diesel Power Products . They have an immense selection of repair and performance parts in stock and ready to ship to your front door, but the best part is they are staffed with industry leading experts who can help you pick exactly the right part for your diesel truck to get it back on the road or customize it to meet your needs, so if you have any questions, just give ‘em a call!

9 thoughts on “ Diesel Exhaust Fluid: Everything You Need to Know ”

• Pingback: Diesel Engine Maintenance Checklist: 7 Tips for Keeping Your Vehicle Running Strong

So if I am low on DEF I can just piss in a bottle of distilled water at a ratio of 67 to 33% and I’m good to go?

AdBlue, DEF, AUS32 from China at a very good FOB price:

Flexi tank bulk: $365/ton 10L: $4.5/bottle 20L: $9.4/bottle 1000L: $425/IBC

WhatsApp: +8613714455119 Website: http://AdBlue.cn

Was a very interesting and learning experience for me thanks

12/22/2023 Filled up my DEF tank at Buc-ee’s at the pump. $3.299 per gal. Robertsdale AL.

• Pingback: 5 Diesel Exhaust Fluid Myths You Need to Stop Believing Right Now! - Geeks Around World

I had a container of DEF break in my new truck interior. I have cleaned 4 times and when the temperature heats up in the cab. The ammonia smell comes back. What can I clean my carpet with to neutralize the smell?

Question I have is DEF Platinum a worth while investment… Does this product add a benefit

why is it so hard to find the code, for 2024 blue def expiration numbers on the box!!!!!!

Your email address will not be published. Required fields are marked *

~ Travel and Adventure Blog

Diesel Exhaust Fluid (DEF) – Is My DEF Expired?

07 Wednesday Sep 2022

Posted by Coach-Net in Tech Tips , Tips & Tricks

≈ Leave a comment

Class A RVs , DEF , Diesel Exhaust Fluid , Diesel Pusher , RV Camping , RV Engine Maintenance , RV Tips , RV travel , Travel Tips

Before we start, here’s a quick review of Deisel Exhaust Fluid. DEF is designed to treat exhaust coming through the exhaust chamber to meet emissions that were implemented in 2010. Basically, the government issued mandates for lower emissions from diesel engines. DEF uses a mixture of Urea (32.5%) and water (67.5%) sprayed on the exhaust fumes which reduces the NOx to nitrogen and water in order to meet the recommended levels. Since my last article on DEF for Coach-Net was published we have been getting numerous questions regarding DEF and its shelf life, how we know if it’s contaminated, and how to get rid of it.

Is There A Shelf Life For DEF?

I talked with a representative from Blue Sky that stated their DEF has a general one-year shelf life. They went on to state that the Urea will degrade if exposed to direct sunlight or stored in temperatures above 90 degrees. The actual amount of degradation can not be determined unless you purchase a DEF tester.

The representative went on to clarify that if the DEF is stored between temperatures of 10 degrees to 90 degrees it has a one-year shelf life BUT if it is kept out of sunlight and under 75 degrees, it can be used for up to two years, however, it’s best not to use it if it’s over 3 years old.

I have run a company for the past 10 years that had 3 diesel trucks pulling trailers that put over 100,000 miles on each vehicle every year, therefore we have had lots of experience and education regarding DEF. In face, we received a service notice from Ford Motor Company on DEF Shelf Life vs Temperature which listed the following:

Constant Ambient Storage Temperature / Shelf Life In Months

• ≤ 50 °F degrees – 36 months
• < 77 °F degrees – 18 months
• ≤ 86 °F degrees – 12 months
• ≤ 95 °F degrees – 6 months
• < 104 °F degrees – 2 months

Interpreting DEF Codes

How do you know when your DEF was produced in order to determine its shelf life? Off-the-shelf products such as the 2.5-gallon versions have a code on the box that includes a date stamp. However, these codes can be difficult to decipher.

I talked with Peak Technical Product Support and he said there are many different codes used on their product due to the bottling and packaging at different plants all over the country. He dissected this one for me as follows:

23/169 /CP7/ 00591/ 0125

• 23 is a year minus 1 year=2022
• 169 is how many days are left in the year 2022=July 15, 2022
• Cp7 is the bottling plant
• 00591 is tank number
• 0125 is the batch number

He also stated that they have a two-year shelf life recommendation however it was best to purchase a digital refractometer to be sure what you are putting in your tank has not expired. If you have any doubts as to the date code recommend, call their tech support number and a technician will help dissect the code for you. He also stated that both Walmart and Home Depot are the largest distributors and would have the newest product.

DEF Life At The Pump

Ok, but what about the DEF that is pumped at a larger fueling station from an underground tank and does not have anything printed? The easiest way to tell if the DEF has expired or been contaminated is by looking at it. When DEF is in good shape, it should look clear and free of any contaminants or discoloration. If it is cloudy, discolored, or difficult to see through, it is likely expired.

I spoke with a technician at Cummins and they stated that The NOx sensors monitor the DEF quality and will provide an indication when DEF is not in compliance which is the check engine light.

So what happens if you do have a full tank of DEF and the dreaded “Check Engine” light shows? There are service centers that will drain the tank for you however it can be expensive. Alternatively, you can do it yourself with a mechanical pump or even a hand pump depending on how much you have in the tank. If you have a truck the DEF tank will only be about 3-4 gallons which can be pumped out with a hand pump and put in an empty DEF container or gallon jugs.

According to Daimler Worldwide and specifically the Freightliner Custom Chassis Corporation (FCCC):

DEF life will vary based on temp and direct sunlight, so having the tank in a compartment like it is on RVs is much better than on a vehicle where the tank is exposed to direct sunlight. FCCC has not seen a large number of people having an issue with DEF quality, but I would recommend always leaving some room in the tank so that if you do get an indicator you can still put some fresh DEF in the tank and help revive the DEF quality. In some cases service centers have had to force air into the tank with a hose and then have a second hose to allow it to drain, but that’s certainly not the norm.

What Do You Do If You Have Expired DEF In Your Tank?

So if the shelf life is one year, what should we do about units that have DEF sitting in the tank for longer than that? I’ve talked with several owners who stored their rig during the pandemic and their DEF could be 2-3 years old! As FCCC indicated, try to leave the tank less than ½ full as you can strengthen or rejuvenate degraded DEF with the addition of new DEF!

Being from the Midwest, I contacted the local farm equipment dealer as well as PetroBlend, one of the largest distributors of DEF in the agricultural industry. They stated the very same thing that proper DEF management is the key, as sometimes combines will not go through their 30-gallon tank for a couple of years.

Where Can You Properly Dispose Of Bad DEF?

The internet is flooded with DEF information with some stating it is the same chemical composition as fertilizer so you can dump it just about anywhere. While DEF is non toxic, it should be disposed of in an environmentally friendly way. Do not pour bad DEF down the drain or dump it on the side of the road. It’s recommended to contact your local environmental waste disposal company for a nearby disposal site. I also called the local landfill as they have a hazardous materials division and they will take it at no cost as it is considered residential and falls under fertilizer or engine fluids. Anything over 10 gallons is considered commercial and assessed per gallon.

About the author:  Dave Solberg : Managing Editor, RV Repair Club

For the last 25 years, Dave has conducted RV maintenance and safety seminars, developed dealer and owner training programs, written RV safety and handyman articles authored an RV handbook reference guide, and logged over 100,000 miles on the road in an RV.

RV Repair Club  is your go-to online resource for enthusiasts who want quality RV maintenance, repair, and upgrade information – a community where passionate RVers can come together to gather knowledge and share their experiences.

Learn more about RV Repair Club .

Sean S. ~  “If you’re on the fence about this, jump on over. Coach-Net paid for itself for us with a freak accident within the first 24 hours of signing up. You never know when something could go wrong and you’ll be wishing you had gotten this coverage.” 

Share this with your friends:

• Click to share on Facebook (Opens in new window)
• Click to share on Twitter (Opens in new window)
• Click to share on Pinterest (Opens in new window)
• Click to print (Opens in new window)
• Click to email a link to a friend (Opens in new window)
• Click to share on Reddit (Opens in new window)
• Click to share on Tumblr (Opens in new window)

Leave a comment Cancel reply

• Already have a WordPress.com account? Log in now.
• Subscribe Subscribed
• Copy shortlink
• Report this content
• View post in Reader
• Manage subscriptions
• Collapse this bar

• Forum Listing
• Marketplace
• Advanced Search
• 2013-2018 4th Gen Ram 6.7L Cummins
• 2013-2018 General Discussion
• June's Cummins of the Month is now open for entries!

DEF brand differences?

• Add to quote

I was in Wallyworld yesterday and saw they had a display 2.5 gallons of their own brand of DEF which is "Super Tech" for $7.88. It had a date stamp of July 2019. I'm assuming that's manufacture date? Peak brand Blue DEF is usually just under $13 for 2.5 gallons. Any harm in using the cheapo stuff?  

I’ve been using Wally World def for years no problem.  

Lots of threads on this already. It's pretty much all made in the same places. A lot of folks use the Peak and a lot use the Super Tech with good results. Then there are those that only use it at the pump to ensure its freshness. The only thing I would caution on both the Super Tech and Peak is to check the seals before buying. Some folks have reported people filling the empty jug with water and returning it to customer service only to have it re-stocked back on the shelf.  

That return scam also applies to oil containers, I had broken seals when I opened some expensive synthetic gear lube years ago. Scammer refills with stuff that looks like oil and returns it for a refund.  

It's all the same.  

Gr8bawana said: I was in Wallyworld yesterday and saw they had a display 2.5 gallons of their own brand of DEF which is "Super Tech" for $7.88. It had a date stamp of July 2019. I'm assuming that's manufacture date? Peak brand Blue DEF is usually just under $13 for 2.5 gallons. Any harm in using the cheapo stuff? Click to expand...

DEF is DEF. Been using nothing but Wal Mart super tech since day one (3 years now) and no issues. .  

Super Tech FTW!  

I just don't like the messy Super Tech bottles.....the ones I 've seen looked like they leak are got spilled on while being filled...and do they have any kind of security seal? Pumps can be messy and sticky too....have gloves for that.  

I've used Travelers, Super Tech, Peak Blue. As long as the DEF meets the spec it's all the same stuff. I'm running Super Tech at the moment from Wally World.  

I always buy mine at the pump.....with that being said, I’ve never witnessed ANY DEF in one gallon or 2.5 gallon jugs NOT have the API certification on the packaging.  

I believe buying the DEF at the pump is the cheapest route. Fill up the old containers you're buying now.  

Do not reuse the DEF containers, that's where the problems start.  

I only use about 15 gallons a year. As long as it gives me better MPG and power I am good...LOL  

Got to get that extra JUICE in that truck lol  

I've had terrible experiences with the pump DEF, never has it not ran all over the side of my truck. Its cheaper and easier to fill the tank, but the mess is ridiculous.  

I fill mine at the pump...never had an issue with spillage. It is absolutely the best way to do it, get it exactly full every time with none left over, freshest and cheapest.  

• ?            
• 383K members

Top Contributors this Month

• Forum Listing
• Marketplace
• Advanced Search
• 2011 - 2016 Ford Super Duties
• 6.7L Power Stroke Engine and Drivetrain

DEF Date Codes and API Certification

• Add to quote

Attachments

Correction to tip #1 Don't buy old DEF jugs. When buying DEF in jugs, look at the code. In 2014, find a jug with 14 or 15 in the 3rd and 4th spaces and the LOWEST three digit number you can find in the 5th, 6th, and 7th digits. Store it in a cool location out of the sunlight. Erich  

What about DEF in tank in hot climates? OK, I appreciate the information in your post but what about those of us who live and work in HOT climates such as the desert southwest. During the summer months the temperature can reach well over 100* during the day and sometimes not cooler than 95* at night. The DEF inside the tank can remain in there for the complete summer if you don't drive a lot. Is the DEF then degraded to a point where it will not do the job it was intended to do? If so, what will happen to the system? Will it throw a code for contamination or just regen more often and less efficiently? Something to think about!  

I was wondering the same thing about the heat. Since our 5 gal tank is meant to go 5,000 - 6,000 miles between fillups, that means many many months of DEF storage in the truck. Knock on wood I haven't had a contaminated DEF code thrown - which idles you... I don't drive the truck all that often. Maybe it is a good thing I top it off often - so I am always putting some "fresh" DEF in. I live in South Florida - we don't get triple digit heat, but I gotta believe that if the inside of my truck gets to 135 - 150 in the summer, so does the DEF in the tank.  

DEF and Hot Temps Dak and Bukhntr: Great questions. The storage and shelf life limits apply to DEF prior to being dispensed into a vehicles tank just for the situation you have identified. These limits assure that even after exposure to a full summer season in the SW or SE, you still have effective DEF. I've tested DEF after exposure to the kind of temps/times you have described, and urea concentration is reduced (by about 1-2%), but not to a point where you will have an issue with a "contaminated DEF" code. The vehicle uses slightly more DEF when it has been exposed to temp/time for a full summer, but you would not notice it. The other important factor is that your vehicle's tank is vented specifically to limit the pressure build up of ammonia vapor in the tank and to allow air to enter as the DEF is depleted. This vent has a filter on it so that any air that enters the tank is clean. Jugs do not have vents, so they tend to expand and leak. My research and testing concludes that is a good practice to add DEF to your DEF tank when you get the 1/2 full status on the information panel. This is about 2.5 gallons. This keeps the DEF fresh and effective. It also clears the "DEF Level Under 1/2" message so you never get into countdown mode. There have been issues with clearing the countdown mode, but I believe Ford has fixed them in the 2013 or later trucks. Refilling when you enter countdown mode with the messages displayed on the dash (starting at something like 800 mi) also works, but you MUST add 5 gallons to reset the countdown mode. DEF tanks don't get quite as hot as the interior of the vehicle since they are not exposed to heating by the sun. Yes they do get up to the outside temp which is still extremely HOT. We spend winters in AZ, and temps in the 90s are expected next week. I've seem temps over 140 in my vehicle in AZ in May. Note: Regens clean the DPF (diesel particulate filter) independently of the DEF system so DEF quality does not affect regen frequency. I use a full tank of DEF in under 3000 miles when hauling our Pickup Camper and a utility trailer, but I like to use the capability of the truck and keep up with traffic. The only time you should get a contaminated DEF code is if diesel is accidentally put in the DEF tank, diesel additive is accidentally poured in the DEF tank, or if something like antifreeze or windshield washer fluid or plain water is accidentally put in the DEF tank. It is also possible for the NOx sensor to fail which would can generate a fault. Erich  

Erich, I figured it wasn't a big deal somehow, since I haven't gotten an contaminated DEF errors. I have had a 6.7 since mid 2010 and never got an error. I am the only one that puts DEF or Diesel in my truck, so that I don't worry about the wrong fluid getting put in the wrong hole. And it is funny, as much as I hear people here complain about DEF and DIESEL fill tubes being in the same "door", on the Chevy sites they complain about the DEF fill tub being under the hood and how it is a pain to fill, they wish it was like the "Fords". Kind of a grass in greener on the other side thing. In the new trucks I like the DEF GAUGE - this "guessing" at how much you have stinks. Around town I get close to the 1,000 miles per gal. on the road I go down to about 800, but it really doesn't matter as much then anyways, since on my summer drives I typically put on several thousand miles. BTW, ever notice running biodiesel gets you less MPG on the DEF? (It does as Bio produces more NOX) I use my truck's capabilities to keep up with traffic too... Your exact scenario of a non-resetting countdown is why I try to keep the DEF topped off. My truck was in the range that was affected by that error and I have new Nox sensors under the recall. I just figure if I am stopping for fuel and bulk DEF is available, I might as well top off. Since bulk DEF isn't at every station. I also refill my two 1 gal. DEF jugs filled as well. I have range and fuel station anxiety, so I keep 2 extra gal of DEF and 20-30 extra gal. of diesel on board when I travel. Long beds are nice to have for this. I used to drive diesel pickups when it seemed like only 1/6 of the stations had diesel and it wasn't available at every interstate exit there was gas at. Now of course, it is much better, closer to 3/4 of the stations have it, but old habits die hard.  

DEF Dak: Great observation on DEF refill port location opinions. If you can believe it, some motorhome manufacturers put the fill port on the opposite side of the coach, making it impossible to add diesel and fuel at the same stop at a truck stop. Lots of complaints about that one. I like the fill port under the fuel door, but don't like using a funnel. I use a spout I made myself because the Ford spout has a finicky vent, and the other spouts I found were leaky. Have not tried biodiesel yet, but will later this year. Based on what I've discovered, clean diesels running biodiesel could be a big thing. Audi, BMW, VW, Ford, Chev, etc. are all making diesel powered passenger cars that are cleaner than gas and get amazing fuel economy. For me the 6.7 diesel torque and power compared to my previous 1999 F350 V10 4X4 Crewcab, (even with a number of power adders on it) is like night and day. I was considering adding a supercharger or turbocharger to the V10 until I test drove the new diesels. No-brainer which way to go. I've been told by researchers in the diesel emissions field that 6% DEF dosing to further reduce NOx (as opposed to the typical 2-3% now) could mostly eliminate the need for diesel particulate filter ACTIVE regeneration and improve efficiency of the engine by increasing combustion temps and pressures and further reducing EGR contributions to the intake air. This might be as simple as a reflash of the engine control module. I'd much rather have a DEF gauge on my truck. I've yet to get a satisfactory answer from Ford on this one. I believe the answer is that if DEF range is greater than oil change interval, then no gauge is required. When I use the truck for what it designed for (hauling heavy loads at freeway speeds), we get 10-11 MPG diesel and 500-600 MPG DEF. Later this year, I'm going to try and make a setup that uses the OBD2 port and a transmitter to send the DEF level data to a smart phone. I've seen the sensors, and am sure they provide continuous level readings. Similar setups are available for other vehicle data like EGT off the OBD2. We like to stay off the highways whenever we travel, so I share your concerns about finding the next fuel/DEF stop. We make our own DEF (long story) so I carry the urea dry and make 2.7 gallons (using distilled water) every 3 days or so which is about our usage with the camper in the bed. We've had the DEF tested by an independent lab and it meets or exceeds spec requirements. Kind of like making your own biodiesel, but for DEF. Erich  

Five Star DEF said: Dak: Great observation on DEF refill port location opinions. If you can believe it, some motorhome manufacturers put the fill port on the opposite side of the coach, making it impossible to add diesel and fuel at the same stop at a truck stop. Lots of complaints about that one. I like the fill port under the fuel door, but don't like using a funnel. I use a spout I made myself because the Ford spout has a finicky vent, and the other spouts I found were leaky. Have not tried biodiesel yet, but will later this year. Based on what I've discovered, clean diesels running biodiesel could be a big thing. Audi, BMW, VW, Ford, Chev, etc. are all making diesel powered passenger cars that are cleaner than gas and get amazing fuel economy. For me the 6.7 diesel torque and power compared to my previous 1999 F350 V10 4X4 Crewcab, (even with a number of power adders on it) is like night and day. I was considering adding a supercharger or turbocharger to the V10 until I test drove the new diesels. No-brainer which way to go. I've been told by researchers in the diesel emissions field that 6% DEF dosing to further reduce NOx (as opposed to the typical 2-3% now) could mostly eliminate the need for diesel particulate filter ACTIVE regeneration and improve efficiency of the engine by increasing combustion temps and pressures and further reducing EGR contributions to the intake air. This might be as simple as a reflash of the engine control module. I'd much rather have a DEF gauge on my truck. I've yet to get a satisfactory answer from Ford on this one. I believe the answer is that if DEF range is greater than oil change interval, then no gauge is required. When I use the truck for what it designed for (hauling heavy loads at freeway speeds), we get 10-11 MPG diesel and 500-600 MPG DEF. Later this year, I'm going to try and make a setup that uses the OBD2 port and a transmitter to send the DEF level data to a smart phone. I've seen the sensors, and am sure they provide continuous level readings. Similar setups are available for other vehicle data like EGT off the OBD2. We like to stay off the highways whenever we travel, so I share your concerns about finding the next fuel/DEF stop. We make our own DEF (long story) so I carry the urea dry and make 2.7 gallons (using distilled water) every 3 days or so which is about our usage with the camper in the bed. We've had the DEF tested by an independent lab and it meets or exceeds spec requirements. Kind of like making your own biodiesel, but for DEF. Erich Click to expand...

DAK & Five Star DEF, Thanks for the posts guys. Really good information. I will not bother to worry about the DEF degrading while in the vehicle any more. I have always kept a close eye on the DEF level and when it gets to the half full make I drive another 200 miles then add 2.5 gallons. I've never used the DEF in the pump because my local diesel outlet doesn't have it. Might try it this summer when I'm traveling. Thanks again.  

Great info - but you have to wonder why the obscure date code when age is so important to the end user. Think date code on printer ink or potato chips. DEF at he pump is cheaper and relatively fast, but whatever you do, don't inadvertently (not paying attention) put the DEF pump in the diesel tank. It will cost you $10k!  

DEF_Date BlueDEF is the only package I've found with a "coded" date, but I have not seen them all (yet). Most others, especially OEMs, clearly mark the date of manufacture and include a note that specifies not to use DEF more than 2 years old. See photos. Cummins Fleet Guard clearly prints the date and time of manufacture as in picture. So does ACDelco (not visible in image but it is on the jug) and they add the note about storage requirements and 2 year age limit. VW/Audi also prints date. Erich  

Thanks, this has a lot of good information. I'm new to later models diesels, and this answered most of my questions. I have a cold storage room in my basement, think I'll store the def down there. The garage gets very hot in the summer. Is blueDEF ok, I saw some at O'Reilly yesterday, but thought maybe i should use Motorcraft. I'll check the dates.  

DEF redpine: While I can't guarantee anything, my research I indicates that any DEF that has the API certification mark, has a label that says it meets ISO22241, and is reasonably fresh (less than 1 year old) is OK for your truck. Read your owner's manual and see what it says. I've tested several gallons of BlueDEF for urea concentration, and it has met specification. Good idea to store it in a cool dark location. Erich  

Is filling DEF at a truck stop, from the pump, the best way to go? I have a station very close to home with this. Seems the most convenient, for sure. Only done it once so far as the truck is quite new to me. Took $.32 :ack:  

So far the cheapest way to do it and you know it is "full". How many miles did you drive before you tried to fill up with DEF. Sometimes the pumps are a little finicky. Obviously if it spills over and gurgles down you know you are full. DEF Freezes, so if you are in one of those climates and only take shot trips you may not use much. Some Northern Canadians and Alaskans report using very little DEF in the winter when they only take short trips. (There is a DEF heater - so a longer trip will cause the DEF thaw out and turn back to a liquid) Having said that a lot of use keep spare DEF around, because you may forget to fill it up until the truck says "800 miles to idle" and you might not be able to find any easily. I checked out Five Star DEF's web site, and they have a unique idea - selling DEF in dry form and you mix it with distilled water when you need it. It stays fresh a lot longer that way. I admit that I keep some around. My current method is to fill up the truck DEF tank with my 2 gal. jugs first and then the next time I top off the truck, I refill the jugs. That way the jugs always have fresh DEF in them. The jugs don't last long on my long drives when the jugs are in the back of the truck bed in a rubbermaid container and when I am home I keep them in my A/C garage.  

I had driven just over 100 miles, only had the truck for 2 or 3 days when I topped off the DEF. With no guage I wanted to make sure it was full. Took my time, DEF ended up coming out of the pipe, so its full. Funny thing is the truck stop recommended running my card for $30 (had to pre-authorize in order to turn the DEF pump on). But $.32 is all I got. At least the tank came full from the dealer :thumbsup: The truck stop I'm referring to has DEF pumps at each of the big truck diesel pumps. Small nozzels, fit the DEF tank perfectly.  

Feedingcannibal said: I had driven just over 100 miles, only had the truck for 2 or 3 days when I topped off the DEF. With no guage I wanted to make sure it was full. Took my time, DEF ended up coming out of the pipe, so its full. Funny thing is the truck stop recommended running my card for $30 (had to pre-authorize in order to turn the DEF pump on). But $.32 is all I got. At least the tank came full from the dealer :thumbsup: The truck stop I'm referring to has DEF pumps at each of the big truck diesel pumps. Small nozzels, fit the DEF tank perfectly. Click to expand...

DEF Feedingcannibal: Sounds like your tank is full to me. As for as the charging practices, I'm surprised they allowed you to buy DEF only. EVERY truck stop I've used requires purchasing diesel FIRST, and then DEF. They hit my card with a $100 preauthorization for $10 diesel and $10 DEF. We discussed this with the engineer that led the managing committee for implementing DEF in the US and he was surprised to hear that this was an inconvenience :lol: Filling an empty retail DEF jug like 2.5 gal or 1 gal at the pump for reserve DEF is a good idea. Just make sure to use it only for DEF and keep it very clean and capped at all times. Don't rinse it with anything other than distilled water. NEVER use a metal gas can. Use only new polyethylene jugs, or retail jugs that have never had anything other than DEF in them. Get a good nozzle or funnel and keep them clean. Use it within 2 years of getting it at the pump. Check out what Five Star DEF offers for new reusable jugs and nozzles if you want to, and see what you think. Note: Used retail Jugs and the spout that comes with a 2.5 gal jug or from Ford separately are also completely adequate. Dak and other DEF Nozzle Users: I'm working on an "affordable" magnetic interlock defeat tool that will make filling reusable jugs possible on nozzles with the interlock. There is a solution that you can buy today called the OP21 Gu. It's around $35 delivered. See attachment. Some truck stops have one to borrow when buying at the pump. Expect ALL DEF pumps to have the interlock system sooner or later - making it harder on users to dispense DEF into Reusable Jugs for reserve use on our vehicles. Truck fleet owners can't afford to have a driver put DEF in the Diesel and this is a solution to make it nearly impossible to happen. Commercial trucking rules the DEF market - diesel truck owners like us need to be able to adapt. If this device is as simple as a single magnet, I'll add them to our current line of reusable jugs at the neck. I need to buy a nozzle to make sure this works, but I'm waiting for the nozzle price to come down some more. The nozzle and collar together lists for around $640. There is a knockoff on Northern Tool (nozzle AND collar) for around $359. I'm not exactly sure yet how it works, but I'll likely buy a set soon to figure it out. Erich  

I have never been able to fill def at pump. Nozzle keeps clicking off attendants said there was plenty of def in their tank. this happened twice ended up buying jug at walmart. any solutions?  

slatjoe1 said: I have never been able to fill def at pump. Nozzle keeps clicking off attendants said there was plenty of def in their tank. this happened twice ended up buying jug at walmart. any solutions? Click to expand...

Five Star DEF -Yes that is the magnet. You can "defeat" it manually by very slowly pressing the handle in. It will never pump out full speed, but enough to fill the truck and any jugs you may have. It is a little tricky, but there is a sweet spot. Not all of the places have a magnet to borrow and the few extra minutes was worth the $7 a gal difference, especially when I pumped 4-5 gal... That would have about paid for the magnet to just have around... (I admit, I have been lazy and haven't bought on yet). Also, Harbor freight has ring magnets that are much cheaper that that clamp... Assuming that is all the clamp is, might be able to save some coin there. Five Star for their solution to integrating it into the jug and the rest of us to save money.  

• ?            
• 212.5K members

Top Contributors this Month

• Forum Listing
• Marketplace
• Advanced Search
• Ford 17-19 6.7L Powerstroke Forums
• General 6.7 Discussion (2017-2019)

What DEF y'all running?

jpv9297 said: My dealer service Tech said that the DEF system can become cogged/damaged with bad DEF fluid from non ford DEF. The Tech said to preserve the waranty, he suggested buying the DEF at the dealership... Click to expand...

mts678 said: My def tank just fell off so that's not a concern anymore :joy::joy::joy: Click to expand...

RJC2 said: mts678 said: My def tank just fell off so that's not a concern anymore :joy::joy::joy: Click to expand...

mts678 said: I just ordered the gallon container of it off a ford website for $65 shipped :+1: Click to expand...

beanoil said: mts678 said: I just ordered the gallon container of it off a ford website for $65 shipped :+1: Click to expand...

Hey Guys, kind of new to this DEF topic as the last diesel I had was an 00 F-250 and never heard of DEF back then. I just purchased a 2017 F-250 lariat FX4 and am awaiting delivery but have been reading up on the forums to try and pick up information about the new truck. i) What does DEF do for this 6.7 engine, ii) how large of capacity is the tank on the truck, iii) how often does one need to refill this DEF tank. Yeah newbie questions. Thanks  

Pilot truck stop DEF at the pump. Got 8000 miles out of my last tank of DEF. cheaper this way too  

CCstroker350

So how much is your Ford dealer selling their special DEF for?  

I buy the 2.5 gallon jugs at Walmart for $11.  

Urine is also urea diluted with water, so if you're really looking for the cheapest option....  

I go with the cheapest. This crap is dumped in your exhaust not your engine so my care factor is low.  

F250_SUPER_4x4

RJC2 said: I have on 02 F250 as well as a new 2017. You'll love the improvements. Here's a Youtube video that can explain the DPF and DEF system to you better than I can. Congrats on the new truck. It will take the better part of a month to get accustomed to all the gadgetry. It's been almost a year for me and I'm still getting used to it, but I'm slow, or so says my 12 year old daughter. https://www.youtube.com/watch?v=1--SvU6y93E Click to expand...

A guy I work with and this is from him.. His Duramax has a def related issue and was told if super tech def is used that they would void his warranty. I’m not going to try it out, it Peak Blue . Been debating on using Maverik as it is a bit better than buying jugs.  

Blue Peak DEF; about $13 at Pep Boys.  

Rocweiller said: A guy I work with and this is from him.. His Duramax has a def related issue and was told if super tech def is used that they would void his warranty. I’m not going to try it out, it Peak Blue . Been debating on using Maverik as it is a bit better than buying jugs. Click to expand...

jetjock15 said: My buddy with a Dura max uses only dealer stuff cause he thinks this too. I couldn’t see ford denying warrenty over the def brand. Maybe I need to read the fine print. What a chicken versus egg deal. Only reason I keep def is to maintain warrenty. If they then said my def fluid is what then voided my warrenty they would get slapped, then sued. And I’d immediately tear the garbage tree huger liberal crap off truck. Win win Click to expand...

Catch Blue Def while on sale from one of those big box auto stores. Usually can get a buy 1 get the other 1/2 off and such which equates to like 11 bucks or less for 2.5 gallons. Blue Def (and probably others) has a shelf life of 2 years provided it is stored between 12*F and 90*F. Keep it out of sunlight. So if you run across a good deal, then you can stock up.  

• ?            
• 269.7K members

Top Contributors this Month

• Forum Listing
• Marketplace
• Advanced Search
• RAM 1500 EcoDiesel Forum (2014-2019)
• RAM 1500 Diesel General Discussion

DEF from Tractor Supply

• Add to quote

Tractor Supply sells DEF $9 for 2.5 gallons . Has anyone used this DEF ? Good /Bad?  

DEF is DEF  

I agree DEF is DEF as long as it meets the standard. Tractor supply is one of those stores where you gotta know what the prices are on what your looking to buy at their competition. They have good prices on some things and try and rape you on others.  

That's $3.60 a gallon PLUS TAX. Bulk DEF is about a doller-a-gallon cheaper. If it's available, no shopping, hauling, pouring, storing and much cheaper.  

I have used their DEF on my first fill up, but have used the pump at Pilot station every time after that. Like the Capt said the pump is cheaper faster to pump and no mess or waste.  

Def fluid does have an expiration date & must meet the AUS 32 standard for our trucks.  

Diesel Exhaust Fluid doesn’t degrade nearly as quickly as people assume. For example, at 86°F, DEF has a shelf life of a year. REMEMBER: Do not equate shelf life to spoiling like food, as DEF will not go bad. IT will lose some effectiveness, and the SCR will dose at a higher rate, but it won’t “go bad.”  

Up here in the great white north it is not easy to find bulk DEF, we do have tractor supply however : )  

Go to a truckstop they'll have it Watch my YouTube video I fill up the flying J a I M in Ontario Canada near London  

I have a Tractor Supply about 4 miles from home. I didn't know they sold DEF. I paid $11 for 2.5 gallons at Sam's. Thanks for the tip. I won't need any for a while but will drop by there next time I need a jug. No bulk DEF within 60 miles of here.  

With any potential for some sort of a DEF related issue, I will just use Mopar DEF , oil filters until the warranty runs out. Don't want them trying to say I used some non- approved fluids etc.  

Are you only running MOPAR Diesel too?  

You can get your def at any truck dealership. air one or trp are good brands. KW,Pete, Star and the liner boys all use it, their are others. Shoudnt be hard to find.  

How much is Mopar DEF per gallon?  

That is a great price for non-bulk DEF, thanks for posting!!  

Just checked Tractor Supply's website. The store near me has it on sale for $8.00/2.5 gallon jug. It is TerraCair DEF. Ford Motor Company uses it for initial fill ups of the diesel vehicles they sell. It meets API specifications and is manufactured by CF Industries in the USA. CF Industries Products: Diesel Exhaust Fluid  

• ?            
• 433.6K posts
• 32.9K members

Top Contributors this Month