One of the most important times for your engine is just after you have installed new valvetrain components. Correctly breaking in these parts can spell the difference between a top-performing engine and one that will fall victim to friction and wear because the components aren’t mated properly. Lunati’s Concentrated Engine Break-In Additive is a must for anyone installing a flat tappet camshaft in their engine, and it is recommended for all valvetrain systems. The fluid is available in a 12-ounce, easy-to-pour bottle. This special blend contains all necessary additives including ZDDP.