Redline High-Temp Automatic Transmission Fluid 1 qt P/N 30204 For heavily-loaded vehicles, allowing operation at up to 70F higher while maintain thicker viscosity than traditional ATFs Use where Dexron III, Dexron II, Mercon, or GL-4 gear oil are recommended Dramatically less evaporation, less varnish of valves and clutches in extreme conditions Red Line offers the widest selection of fully-synthetic ATF on the market today Each offer improved thermal stability, maintain viscosity levels, and feature lower volatility while providing the required frictional characteristics of each fluid's OEM-style replacement Reduced oxidation and lower volatility at high temperature Allows high-temp operation without varnishing valves and clutches Extended drain intervals