Includes chlorinated paraffins, which some consider results in internal engine corrosion above prolonged amounts of time Owned by Energizer, STP has existed Considering that the fifties. This oil treatment may be used with equally regular and artificial oil. It is best to add STP Oil Treatment to new, warm oil. https://engineoiltreatment96283.topbloghub.com/40794217/an-unbiased-view-of-engine-oil-treatment