DEF or Diesel Exhaust Fluid

Diesel Exhaust Fluid, DEF, sometimes known as urea, is a component of catalytic reduction (SCR) systems, which help diesel vehicles meet stringent emission regulations.

Diesel Exhaust Fluid, DEF, is sometimes known as urea.

Urea is a nitrogen-containing compound that turns into ammonia when heated.

Urea occurs naturally however it can be manufactured from natural gas.

Current DEF formulations are nontoxic, colorless, and odorless.

Diesel Exhaust Fluid Test
Diesel Exhaust Fluid Test