This Assembly Lube prepares potential wear surface and prevents metal contact before adequate lubrication can be supplied. Unlike other assembly lubes, Red Line's will not plug filters after initial engine start-up. Provides 3x greater film strength than conventional black Molybdenum Disulfide greases and excellent rust and corrosion inhibitor, allows for long-term storage. For use on camshafts, lifters, pushrods, piston skirts, bolt threads, main and rod bearings. Do not use on exhaust bolts or other high temperature bolts which require an anti-seize. Recommended and used by top camshaft and drivetrain manufacturers.