Red Line Synthetic Automatic Transmission Fluids are designed to provide excellent low-temperature shiftability and improved thermal stability. The balanced frictional characteristics provides smooth and consistent shifts for extended drain intervals. The superior stability compared to petroleum ATFs allows high-temperature operation without varnishing valves and clutches which leads to transmission failure. - Similar to a Type F fluid, featuring even higher viscosity and no friction modifiers - Produces faster shifts, quicker lock-up, better converter efficiency at high temps - Enhanced extreme-pressure additives provide 5-times better film strength than petroleum ATFs - Reduced clutch and gear wear compared to petroleum ATFs - Satisfies GL-4 gear oil requirements.