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How often should the gear oil of a sedan be changed?

1 Answers

LaAlaina

07/30/25 7:04am

The gear oil of a sedan should generally be changed every 40,000 kilometers. However, the specific replacement interval should be determined based on the manufacturer's user manual, as the service life of vehicle gear oil is influenced by various factors such as the vehicle model, oil quality, usage conditions, and driving habits. Gear oil primarily refers to the lubricating oil used in transmissions and rear axles, and it mainly functions to lubricate gears and bearings, prevent wear and rust, and assist in heat dissipation for gears. Automotive gear oil is used in gear transmission mechanisms such as steering systems, transmissions, and drive axles. Due to the high surface pressure during gear transmission, gear oil plays a crucial role in lubricating gears, resisting wear, cooling, dissipating heat, preventing corrosion and rust, cleaning, and reducing gear surface impact and noise.

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