COMP Cams valvetrain assembly spray is designed to protect valve springs, rocker arms, and pushrods against wear during initial engine start-up. This specialized formula clings to valvetrain components during the critical start-up phase for maximum engine protection. And, it offers high-viscosity protection in a convenient spray for an easy, no-mess application. COMP Cams valvetrain assembly spray is compatible with all petroleum, synthetic, and blended engine oils.