Blue DEF Diesel Exhaust Fluid, Bulk, 2.5 Gal.

Blue DEF Diesel Exhaust Fluid, Bulk, 2.5 Gal. Certified by the American Petroleum Institute (API). This DEF meets the stringent quality standards that engine manufacturer service warranties require. All trucks made in 2010 and after require DEF. DEF is a non-hazardous solution of water and urea that is injected into the exhaust stream of diesel vehicles.