Diesel Exhaust Fluid Resources	MORE INFORMATION • 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). Use the DEF Consumption Calculator *POPUP & Flash Required 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.       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.