Pennzoil? Automatic Transmission Fluid has been renamed as Pennzoil? Dex/Merc ATF to highlight the applications covered. Designed to meet the stringent requirements of leading automotive transmission manufacturers, Pennzoil? Dex/Merc ATF is a high quality automatic transmission fluid that provides consistent, reliable, and smooth operation of transmission systems. It features a high oxidation resistance and shear stability, as well as dependable anti-wear and gear protection to help extend the life of transmission components. This mineral oil automatic transmission fluid is designed for historic General Motors DEXRON? III, Ford MERCON, and Allison C-4/C-3 service fill in all applications (transmissions, transfer cases, power steering systems, and hydraulic systems). This includes many older applications in a wide range of vehicle manufacturers such as Toyota, Nissan, BMW, Mercedes and others. Do not use in Ford Type F applications.