19286291 - GM/AC Delco Diesel Exhaust Fluid (Def) - 1 Gallon Container - For Late 2010 - 2012 Chevy & Gmc Trucks With Duramax Diesel

DEF is an Aldehyde free, NOx reducing treatment for diesel engines equipped with a selectivecatalytic reduction (SCR) system. It can also be used with competitive make vehicles using a SCRsystem. DEF meets the stringent AUS 32, ISO 22241 standards for purity and concentration.This product is required for the 2010 mid-year launch of the Chevrolet Express and GMC Savannahvans equipped with the new regular production option (rpo) LGH Duramax Diesel engine and the2011 model year Chevrolet Silverado and GMC Sierra new heavy-duty pickup and chassis cabmodels equipped with the new rpo LML or LGH Duramax Diesel engines. It is part of the SCRtechnology used on these vehicles to meet 2010 EPA emission regulations.