Modern motor oils meeting API SL and specifically category SM do not contain enough zinc additive to assure proper anti-wear protection of high performance engines. The addition of the Torco Oil Zinc Engine Protecteor (ZEP) to any modern motor oil will put back the proper amount of Zinc Dialkyl-Dithiophosphate (ZDDP) purposely taken out to be catalytic converter friendly.
ZEP coats all engine parts and won™t rub, scrape or scrub off so that it protects engines that are occasionally used from œdry starts, a leading cause of premature engine wear of vehicles kept in storage. One 12oz. bottle treats 6 quarts or liters of motor oil.
SAFE & SECURE