STF protects gears, bearings and internal clutches in extreme heat environments. By reducing friction, heat and wear, it improves shifting characteristics and lowers operating temperatures. Exceeds performance requirements for GM, Chrysler, Honda and Mini Cooper synchronized transmissions. STF features advanced synthetic base stocks, multifunctional performance additives, corrosion inhibitors and a foam suppressor to provide excellent synchronizer performance and compatibility with yellow metals found in manual transaxles and transmissions. Recommended for manual transmissions that require automatic transmission fluids, multi-viscosity or straight grade motor oils.