Give the engine in your 2001-2004 Chevy/GMC 6.6L LB7 Duramax the stabilizing, stiction eliminating, performance, or zinc break-in Oil Additives it needs. Increase the life of your engine oil by reducing heat and friction. These additives safeguard and clean surfaces inside the engine while assisting the recovery of power and compression. At XDP, you can find premium brands of additives like Lucas Oil, Hot Shot's Secret, Rev-X, XDP, and Hamilton Cams.