Give the engine in your 2020-2023 Chevy/GMC 6.6L L5P Duramax the stabilizing, stiction eliminating, performance, or zinc break-in Oil Additives it needs. Decrease friction and heat to help extend the service life of your engine oil. These additives protect and clean internal engine surfaces while helping to recover power by restoring lost compression. Shop for premium brands of additives at XDP, including Lucas Oil, Hot Shot's Secret, Rev-X, XDP, and Hamilton Cams.