How many kilometers should the gear oil of a general car be changed?
1 Answers
Generally, the gear oil of a car should be changed every 60,000 kilometers. Gear oil is mainly composed of petroleum lubricating base oil or synthetic lubricating oil, with the addition of extreme pressure anti-wear agents and oiliness agents. Gear oil primarily functions to lubricate gears and bearings, prevent wear and corrosion, and help dissipate heat from gears. It is used in various gear transmission devices to extend their service life and improve power transmission efficiency. Gear oil has excellent anti-wear and load-bearing properties, as well as suitable viscosity. It also features good thermal oxidation stability, anti-foaming properties, water separation performance, and rust prevention. Since gear loads generally exceed 490 MPa, and the load on hypoid gear surfaces can reach up to 2,942 MPa, gear oil accounts for about 6% to 8% of the total lubricant consumption.