Motor oil
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Motor oil, engine oil, or engine lubricant is any one of various substances used for the lubrication of internal combustion engines. Motor oils typically consist of base oils enhanced with various add
Pouring fresh motor oil into an engine
Quart containers of branded bottled motor oil at a store
Using a funnel to assist with a motor oil refill
A woman checking a car's oil level in Togo, West Africa
Lubricant
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A lubricant is a substance that helps to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move. It may also have the function of transm
Motor oil
…sludge (one of the functions of dispersants) and varnish (detergents). It also neutralizes acids that originate from fuel and from oxidation of the lubricant (detergents), improves the sealing of piston rings, and cools the engine by carrying heat away from moving parts. In addition to the aforementioned…
Motor oil, a common lubricant
Lubricants are also used for sexual activities.