ACDelco 10-9243 Professional Dexron VI Full Synthetic Automatic Transmission Fluid - 1 qt Backward compatible with previous DEXRON automatic transmission fluids and can be used as a much-improved replacement for older vehicles/transmissions originally using previous DEXRON fluids Improved performance over previous DEXRON fluids in: friction durability, viscosity stability, aeration and foam control, and oxidation resistance Potential to enable improved fuel economy and longer transmission life Provides for extended drain intervals