How Often Should Gear Oil Be Changed in a Car?

[MacEmilio]

Under normal circumstances, the gear oil in a car should be changed every 60,000 kilometers. Here is some relevant information: 1. Changing gear oil can effectively improve the efficiency of gear transmission of engine power. The selection of oil viscosity is the most basic factor when changing oil. If the viscosity is too high, it can cause overheating of the friction surfaces and unnecessary power loss. 2. The commonly used steels for manufacturing car gears include quenched and tempered steel, hardened steel, carburized and quenched steel, and nitrided steel. The strength of cast steel is slightly lower than that of forged steel and is often used for larger-sized gears; gray cast iron has poorer mechanical properties and can be used in lightly loaded open gear transmissions; ductile iron can partially replace steel in gear manufacturing; plastic gears are mostly used in lightly loaded applications where low noise is required, and the paired gears are generally made of steel with good thermal conductivity.