Home›Products›Engine & Fuel Systems›Oil & Engine AdditivesOil & Engine AdditivesBy keeping your engine lubricated, STP® Oil Additives can help reduce friction, heat buildup and overall engine wear. In addition, our specialised engine and oil additives can help stop oil leaks and reduce oil consumption and exhaust smoking.Product Category Please selectEngine & Fuel SystemsFunctional FluidsProduct Type Please selectFuel AdditivesOil & Engine AdditivesSort by Please selectA to ZZ to ASort by Sort byA to ZZ to AFilterFilterProduct Type Engine & Fuel Systems Functional FluidsView ProductsView ProductOil & Engine AdditivesOil Treatment for Petrol EnginesView ProductOil & Engine AdditivesOil Treatment for Diesel EnginesView ProductOil & Engine AdditivesSmoke Treatment