The function of lubricating oil

Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction, protect machinery and machined parts. It mainly plays a role in lubrication, auxiliary cooling, rust prevention, cleaning, sealing, and buffering

As long as it is applied between two objects in relative motion and can reduce the friction and wear caused by contact between the two objects, it is called lubricating oil.
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