What is the fuel-to-oil ratio for a two-stroke gasoline engine?

[DelMargaret]

The fuel-to-oil ratio for a two-stroke gasoline engine is 20-25:1. The functions of engine oil include the following three points: Lubrication: There is rapid relative sliding between the piston and cylinder, as well as between the main shaft and bearing shells. To prevent excessive wear of parts, an oil film needs to be established between the two sliding surfaces. A sufficiently thick oil film separates the surfaces of relatively sliding parts, thereby achieving the goal of reducing wear. Auxiliary Cooling: Engine oil has a relatively low specific heat capacity and does not inherently have a cooling effect inside the engine. However, during engine operation, the heat generated by fuel combustion can be carried back to the oil tank by the oil and then dissipated into the air, assisting the radiator in cooling the engine. The actual cooling is performed by the water outside the engine casing. Sealing and Leak Prevention: Engine oil can form a sealing ring between the piston rings and the piston, reducing gas leakage and preventing the entry of external contaminants.