Should a fine grinding compound be used to lubricate the valves?

Using a fine grinding compound to lubricate the valves is not advisable. Fine grinding compounds are designed primarily for honing and finishing surfaces to achieve a precise fit or seal, rather than for lubrication. When it comes to lubrication in small engines or mechanical systems, a proper lubricant should be used instead. These lubricants are formulated to reduce friction and wear during operation, maintain a protective film on moving parts, and provide cooling effects.

In contrast, grinding compounds can leave abrasive particles that could cause excessive wear or damage to the engine components, including the valves. They lack the necessary properties to provide optimal lubrication and can lead to increased operational issues instead of solving them. Therefore, the correct approach is to use appropriate oils or greases specifically made for lubrication purposes while keeping grinding compounds for their intended use in surface preparation and fitting.