What Are the Functions of Engine Oil for an Engine?

[SanNaomi]

Engine oil serves the following functions for an engine: 1. Lubrication: When the engine is running, the oil must be able to flow back and forth to reduce mutual wear between metal components. As the engine temperature rises, the oil must also have an appropriate viscosity, evenly coating each part with an oil film to avoid direct friction between components and reduce the rate of wear. When starting a motorcycle in winter, if the oil viscosity is too high, it can make the crankshaft difficult to move, making it hard to start the engine. The lower the temperature, the thicker the oil becomes, so low-viscosity oil should be used in such conditions. 2. Anti-corrosion: When gasoline burns inside the engine, incomplete combustion produces water vapor and carbon monoxide, leading to carbon deposits in the engine. Once these deposits chemically react with the water vapor in the crankcase, they can cause engine corrosion. Therefore, another function of engine oil is to neutralize these corrosive components.