Diesel Exhaust Fluid Resources


DEF Equipment Information
DEF Shelf Life & Storage
Understanding DEF
SCR Technology


What is 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 gallons of diesel consumed you would need 3 gallons DEF).

Is DEF harmful?

DEF is neither harmful 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.
  def unit
Will DEF burn?

DEF does not burn and will not aid combustion.

What makes Air1® DEF so special?

Air1® is DEF by Yara and often the DEF you will get when your new truck is delivered to you.  Heavy-duty vehicle manufacturers demand a high level of purity for DEF to honor the warranty they give on their vehicles. Certified by the API, Yara is a premier producer of DEF, this guarantees that Air1® will be protected from impurities and thus will not harm your vehicle's catalyst.  Choosing Air1® brings you reliability and reassurance!

What sizes is Air1® DEF available in?

Air1® DEF is currently available in bottles, drums, IBCs and Bulk. 

Contact Fleetwing Corporation to purchase.





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