Diesel Exhaust Fluid

DEF Delivery

Fuel service showing gas pump

DEF Storage Tanks

Bulk DEF Pricing


Bulk DEF Delivery

For fleets, purity of your DEF additives is vital to keep your trucks running for the long haul. Retif provides DEF delivery, tanks for DEF storage, and transfer & pumping equipment to keep your DEF clean and pure, from our tanks to yours.

We have the DEF delivery schedule to meet your needs

  • Automatic DEF tank monitoring to make sure you never run out
  • On demand DEF delivery for when you need it

DEF Tank

Retif provides DEF tanks for your on-site storage needs

Learn more about our storage tank rentals.

  • Retif delivers and installs DEF storage tanks directly to your site
  • Keep your tanks clean and your DEF pure with our equipment maintenance program

Bulk DEF Pricing

Let’s keep your fleet
running strong

Keep your operating costs low with flexible bulk DEF pricing. Whether you have 1 truck or 100, we supply the fuel and DEF to keep your fleet on the road.


Diesel Exhaust Fluid (DEF) FAQ

What is DEF?

Diesel Exhaust Fluid or “DEF” is an important part of keeping heavy-duty trucks and machinery operating within federal emission guidelines. Starting in 2010, changes in EPA standards required diesel-burning engines to reduce their pollution levels. DEF fluid can help accomplish this. 

What is DEF made of?

DEF is typically made of deionized water and urea. 

What does DEF do?

Using the combination of deionized water and urea DEF helps transform nitrous oxide emissions into water and gas.

How long does DEF last?

The shelf life of DEF is typically about one to two years when stored at a temperature of 75 degrees. In the field, a full DEF tank can last about 63,000 miles, but it can depend on your own driving habits. 

Where can I buy DEF?

DEF can be purchased by visiting our website. For a quote, please reach out to one of our sales representatives at (800) 349-9000 or contact us.

What is DEF used for?

At its most basic level, DEF is used to help keep diesel emissions clean. Starting in 2010, EPA standards started to apply to diesel-burning engines as well. With its combination of deionized water and urea, DEF eliminates nitrous oxide emissions and turns them into water and gas. 

How to dispose of DEF?

If you spill DEF, isolate the spill in a non-combustible material such as sand. Avoid spilling the liquid in a drain. If you do so, rinse out rigorously. If DEF gets on your vehicle, you can wipe it with water. 

DEF Resources

How Do Fuel Contracts Work?
A fuel contract is a type of futures contract that helps you to avoid the risk of fluctuating fuel prices. When you enter into a fuel contract with a wholesale provider, you agree to buy a specified amount of fuel from this provider. The wholesale provider agrees to provide you... more
truck driving down highway
Temperature Effect on Diesel Exhaust Fluid
Diesel exhaust fluid, or DEF, is a key component in the selective catalytic reduction, or SCR system for modern diesel engines. DEF breaks down harmful NOx (Nitrous Oxide) emissions that come from a diesel vehicle’s exhaust stream. It also helps keep vehicles’ emissions compliant. DEF is a non-toxic, non-hazardous, and... more
truck driving down the highway
What Does DEF Do?
Back In 2010, the EPA began requiring diesel engines to reduce their production of NOx emissions (i.e. nitrogen oxides) in an effort to reduce air pollution. That reduction was accomplished by using the additive Diesel Exhaust Fluid (DEF). Today, almost all heavy machinery and truck diesel engines utilize DEF to... more

Need DEF Pricing or Order Information?

Fill out the form and a Retif team member will quickly reply to discuss how we can best meet your DEF needs.

Need help now?

Call us at 800-349-9000

Contact Retif