What happens if a motorcycle lacks engine oil?

[JulietFitz]

Motorcycle lacking engine oil can cause engine overheating and mechanical wear of engine components such as pistons and cylinders. Below is an introduction to the functions of motorcycle engine oil: 1. Lubrication: After the engine starts, there is rapid sliding between the piston and cylinder. To prevent excessive wear of parts, engine oil is used to create an oil film between the two sliding surfaces, thereby reducing wear. 2. Cooling: High-speed continuous movement of components like pistons and connecting rods, as well as fuel combustion in the cylinder, generate intense high temperatures. The reciprocating circulation of engine oil can transfer and dissipate these heats in time. 3. Cleaning: Operation between engine components produces metal debris and forms carbon deposits and sludge on part surfaces. Engine oil can clean part surfaces while lubricating, carrying debris to the oil tank. 4. Sealing: A certain amount of engine oil between the cylinder, piston, and piston rings can improve air tightness, preventing leakage of compressed and combusted gases.