Engine Flush by STP - Make your Engine Run as Smoothly as Butter!
High-quality motor oils form acids due to combustion from by-products, high temperatures and oxidation. The grit and sludge-forming acid deposits in the crankcase even after draining the engine oil and replacing the filter. The STP engine flush has been specially formulated to dissolve this harmful engine deposit and maintain efficient oil circulation throughout the entire engine. It has anti-wear additives that help protect vital engine wear surfaces during cleaning.