Champion Power Shield Engine Assembly Lube and Oil Booster is specially formulated to provide an extra lubricating film barrier of protection critical to proper engine components assembly, and is recommended for use as an oil supplement in engine applications that require higher treat rates of anti-wear, lubricity, and friction reducing additives including zinc-triphosphates, sulfonates, and phenates, not found in motor oil alone. Failure to clean and lubricate parts properly during engine assembly is among the top reasons for premature engine failure in a newly rebuilt engine or low mileage failure. Camshaft lobes require a high-pressure engine assembly lube that will provide a tough film barrier until the engine is started and oil reaches the cam. Bearings and cylinders must be well coated to prevent a dry start. Champion Power Shield Engine Assembly Lube and Oil Booster is favored by professional mechanics for assembling valve train components. It provides outstanding resistance to scuffing, wear and friction during critical break-in. Recommended for use on several different engine components, such as: rocker arm fulcrum balls, needle bearings, roller tips or rocker shafts; timing chain sprockets and gears; roller lifters and roller camshafts; engine bearing surfaces; outer surface of hydraulic or mechanical lifter bodies.