In 2011 with LML Duramax, DEF aka Diesel Exhaust Fluid was introduced. Regen is the process of burning off accumulated soot in the DPF, also known as Diesel Particulate filter.
In 2011 with LML Duramax, DEF aka Diesel Exhaust Fluid was introduced. Regen is the process of burning off accumulated soot in the DPF, also known as Diesel Particulate filter.