BlueDEF Platinum Diesel Exhaust Fluid - 2.5 Gallon

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 Nitrous Oxide molecules into harmless nitrogen and water vapor—making for cleaner emissions. Making sure you do not run out of BlueDEF® in an SCR equipped truck is simple – watch the DEF gauge, which is part of the diesel fuel gauge, for when it is time to refill. DEF is stored in a dedicated tank next to the fuel tank on the driver’s side. The tanks range in size from 6 to 23 Gallons depending on the truck’s application.