Engine oil mainly has the following functions: 1. Lubrication and wear reduction: oil can form an oil film between two friction surfaces through the friction of parts. The oil film will separate the surface of two friction parts, so as to reduce wear.
2, cleaning: the oil can bring the mud, metal wear particles and other dirty things on the engine parts back to the oil pan, and achieve the cleaning effect.
3, rust prevention and corrosion prevention: oil through the movement of parts, forming an oil film on the surface of the parts, this layer of oil film adsorption on the surface of the parts, prevent water, air and parts surface contact and rust parts.
4. Cooling and cooling: The oil can bring part of the heat in the engine back to the oil tank, and then emit it into the air, which can help cool the liquid engine.
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