What is DEF and why is it used?
Diesel Exhaust Fluid (DEF) is a urea based fluid designed specifically for use in SCR (Selective Catalytic Reduction) systems to reduce NOx emissions. Simply put, DEF is the solution to reduce truck / tractor emissions to meet the new EPA standards. Diesel Exhaust Fluid is a non-toxic solution engineered to help diesel-powered vehicles reduce emissions and improve fuel economy.
Why DEF? The Environmental Protection Agency requires all 2010 on-highway diesel engines to meet new Nitrogen Oxide (NOx) emission standards.
How it works? When injected into the exhaust stream with a specialized dosing module, BlueDEF’s water vaporizes, leaving ammonia molecules en route to the catalytic converter; once there, it converts NOx molecules into harmless nitrogen and water vapor—making for cleaner emissions
SDS sheets available: