Or, it can end disastrously if parts don’t fit right (too tight or too loose), if there’s not enough lubrication when the engine is first started, or if the motor oil that’s used during the break-in process fails to protect the cam and lifters or doesn’t allow the rings to seat. This assembly lube from the COMP Cams is very popular among the veteran engine builders. Although the price is on the cheaper side. But don’t underestimate the ability of this amazing lubricant. I use a thinner mineral oil (SAE 10w30 or 10w40), not a synthetic, on cylinder walls and piston rings. These areas don’t need as much EP protection – you actually want the piston ring face and cylinder walls to have accelerated wear at startup to better seat the rings, thereby optimizing their ability to seal combustion pressures. You can even use a little oil on cylinder walls and no oil on the rings, but I like to be conservative.

A lot of people tend to use SAE 30-grade motor oil and STP for building their engines. We’ve seen people who love to put that stiff thing all over their engine. Lucas Oil is marketing this product as a High-performance Semi-synthetic grease. This is because they have added some synthetic additives to get the most out of it. It is fortified with Zinc and Molybdenum that provide support in extreme conditions. Permatex lubricant is manufactured according to OEM performance specifications. This lubricant for engine assembly is one of the greatest for long-term storage.In general, assembly lube is used to help protect components during assembly and break-in, while oil is used to lubricate and protect components during operation. They added some additives to get the best output even under high pressure. This is probably the best motorcycle engine assembly lube out there. Engine assembly lube should be used on all high load and high friction surfaces such as the lifters, pushrods, camshaft valves cam, rod, and main bearings. The lubes are quite crucial during the rebuild or assembly of engine parts. Basically, apply engine assembly lube on every part that will need engine oil when you run the engine. Engine oil needs the engine to run for some seconds to get to these parts. The lube prevents these parts from running dry in the initial startup. Is Engine Assembly Lube Necessary? Assembly lube is specifically formulated for use during engine assembly to provide temporary protection for engine components.

Generally, assembly lube and grease are compatible with most engine components, including bearings, camshafts, pistons, and crankshafts.The ultimate, of course, is grease. Grease is simply oil which is contained in a waxy, soap substrate. The substrate keeps the oil from running away until it is needed. When operating temperatures rise, the substrate melts, and the oil flows to the component to do its job. Sta-Lube was formulated in 1933. In 1995 CRC innovated it further using additives to make a high-performing motor. These days the CRC is known for supplying high-quality additives, hand cleaners, service fluids and oils, gear oils, greases, and lubrication equipment. Their Sta-Lube 3331engine assembly lube is not any different. I included this at the top position, not for the brand value. But for the real-life experience, I had with this product. This lube will protect the rotating elements of your engine just like a guardian angel.