How often should motorcycle oil be changed?

Newly bought motorcycles generally say that the oil is changed for the first time after 350 kilometers.

The second oil change is 800 to 1000 km, and the third oil change is 500 km. After that, change the oil every 2000-3000 kilometers (mainly depending on whether you are driving at a very high speed, that is, whether you often drive the throttle to the limit to run long distances, and if people commute on the roads in the city, change the oil every 3000 kilometers).

The purpose of oil lubrication is to reduce friction resistance, prevent kinetic energy loss and improve engine power. Therefore, the oil must be changed regularly to prolong the service life of the engine.

Extended data:

The four-stroke engine adopts splash lubrication and pressure lubrication. Two-stroke engines generally adopt a mixed lubrication method in which a certain proportion of QB gasoline engine oil is mixed into gasoline.

However, no matter how the engine works, the mixed oil of this lubricating method is supplied with lubricating oil according to the set proportion, which increases the consumption of lubricating oil, causes incomplete combustion, more carbon deposition and exhaust pollution.

The new generation of two-stroke engines all adopt separate lubrication mode, and are equipped with separate lubricating oil tank and oil pump. The oil pump generally adopts reciprocating plunger variable oil supply pump, which is driven by crankshaft gear through worm gear. The oil supply is linked with the carburetor throttle through the throttle handle and control cable, so that the oil supply changes with the change of engine speed. There is more oil supply at high speed and reasonable oil supply at low speed, which is more fuel-efficient than mixed lubrication.

The engine oil is blown into tiny oil mist by high-speed mixed gas, which is supplied to the parts needing lubrication, so that the engine oil entering the combustion chamber is reduced, the mixed gas burns completely, and carbon deposition and exhaust pollution are reduced.

References:

Baidu encyclopedia-motorcycle

How often do you change the oil?