Grease, oil and lubrication. What is what and what is it for?
In principle,copper greasehas the same applications as ceramic grease. It ensures that bolts such as wheel bolts and spark plugs do not corrode and get stuck. It is resistant to very high temperatures and therefore does not become liquid when hot. Copper grease fills surface irregularities, forming a film to prevent metal-on-metal contact when the nuts are tightened. Copper grease is used on the back of brake pads (preventing them from squeaking), or applied to wheel spindles before they are assembled and tightened. <!--General purpose oil
is not the same thing as penetrating oil. General purpose or household oil is an all-purpose lubricant that is used primarily to lubricate locks, hinges, bicycle chains, etc. It is sometimes also used as a cleaning agent. -->