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.
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!
Is Air1® DEF available?
Air1® DEF is currently available in bottles, drums, IBCs and Bulk. Contact Pumpelly Oil Company to purchase.
