DEF fluid, diesel exhaust fluid, DEF – what is it?
Diesel exhaust fluid, or DEF, is a clear, colorless, non-hazardous liquid used to remove harmful emissions from diesel engines. DEF is composed of a combined solution of urea and water. It’s typically stored in a separate tank on the vehicle and requires refills depending on usage.
How does it work?
In 2010, the U.S. Environmental Protection Agency (EPA) required new emissions standards on medium and heavy-duty vehicles to reduce engine emissions – specifically NOx (nitrogen oxides) and particulate matter. DEF helps break down NOx gases down into harmless water and gas using an advanced catalyst system.
What is the benefit of DEF fluid?
DEF can help optimize engine performance, improve fuel efficiency, reduce maintenance or wear and tear on the engine, and reliability. It can even improve fuel mileage by as much as 5%. It’s an essential component for many diesel vehicles.
Where can I get DEF near me?
Because most diesel engines must use commercial DEF fluid, you can find it in select stores in jugs and commercial pumps. While DEF isn’t offered everywhere, Quarles offers access at the pump at many of our locations. Use our site locator tool or our fuel site guide here to find where to get DEF near you.
Quarles offers quality DEF products and solutions for you and your vehicle.
At Quarles, we carry a variety of premium fuels at over 190 fueling stations across the U.S. – including DEF. We go the extra mile to give you the convenience and reliability you need to keep your operations running smoothly with our DEF.
Our associates are here to provide the best solutions based on your fuel needs. Feel free to contact us to learn more about how Quarles fleet fueling products can benefit you.