Get the Transmission Fluid you need for your 2020-2023 Chevy/GMC 6.6L L5P Duramax. These fluids, which are available in synthetic and conventional, help to extend service life while reducing harmful heat and wear. Using a quality fluid helps reduce the development of corrosion inside the transmission while delivering excellent shifting characteristics. Get top manufacturers like Hot Shot's Secret, Lucas Oil, Sun Coast Converters, and Royal Purple at XDP.