Diesel Exhaust Fluid (DEF)


What is Diesel Exhaust Fluid (DEF) and how should I use it?

DEF is a high purity solution of urea in water (32.5%). It is used to chemically reduce NOx emissions from trucks and buses powered by diesel engines. DEF is contained in a separate tank and sprayed into the exhaust gases.

Never fill the diesel fuel tank with DEF.


How much DEF will I need?

You will not need to replenish DEF every time you refill with diesel fuel. The DEF consumption will be approximately 3% of your diesel fuel consumption (for every 100 liters of diesel consumed you would need 3 liters of DEF).

Is DEF harmful?

DEF is not harmful neither for humans nor animals. DEF is not explosive. It is non-toxic. If you get it on your skin or clothes, rinse with plenty of water. Eyes: Flush with clean water immediately for at least 15 minutes.

Package Sizes:

Available in Bulk, 1249.2L Tote, 1041L Tote, 208L Drum, 2 x 9.46L Case

Find A Location