Torco Zep Zinc Enhanced Engine Protector - 12 oz. Bottle (Case of 12) Rack and Pinion Steering This check valve disc also

This check valve disc also maintains added control at all engine speeds and loads

molded case is finned for maximum heat dissipation

1990-2001 Chevrolet Lumina

improving throttle response and providing a broad torque curve

Torco Zep Zinc Enhanced Engine Protector - 12 oz. Bottle (Case of 12) Rack and Pinion Steering This check valve disc alsoModern 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 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