Stp Lead Subst

Using unleaded gasoline may result in excessive exhaust valve seat wear causing lost performance and possible engine failure in engines designed for leaded gasoline. Contains no alcohol. Can be used with all oxygenated gasoline. Intended for use in vehicles and engines manufactured prior to the 1975 model year. STP Lead Substitute used with each fill-up: Replaces lead protection. Helps prevent power loss by protecting valve seals from wear during higher speed and load operation. Protects cars, trucks, RV's, farm equipment, motorcycles and marine engines. Effective in engines designed for leaded gas.