Suncoast Transmission recommends this fluid in all of their built Cummins, Duramax, and Powerstroke transmission applications for superior cooling, drastic improvement in thermal stability during heavy pulling applications, and further improved anti wear protection to ensure a happy and long lasting transmission! **Note: These are sold in a "case". One Case = 3 gallons of fluid. Disclaimer: SUNCOAST FULL SYNTHETIC ATF may be used in most automatic transmission applications including all GM, Ford, Chrysler, Toyota/Lexus, Nissan/Infiniti, and Honda/Acura transmissions, as well as transmissions installed in all Hyundai, Isuzu, Volvo, Jaguar, Kia, Land Rover, Mazda, Mercedes, Mitsubishi, Porsche, BMW, MINI, SAAB, Subaru, Suzuki, and VW/Audi cars and light trucks. Designed for use in most planetary-geared automatic transmission. NOT for use in CVT, DCT, Type F applications.