How often should the gear oil of a general car be changed?
2 Answers
Generally, the gear oil of a car should be changed every 2 years or 40,000 kilometers. Car gear oil is actually a high-viscosity lubricating oil, primarily composed of petroleum lubricating base oil or synthetic lubricating oil, and blended with extreme pressure anti-wear agents and oiliness agents to form an important lubricating oil. The functions of gear oil are: 1. Lubricating the transmission system, reducing wear on gears and other moving parts, ensuring the normal operation of the transmission system, and extending its service life; 2. Reducing friction and transmission losses outside of gear transmission, improving mechanical efficiency; 3. Preventing corrosion and rust, and reducing gear surface impact and transmission noise.
Having driven for over 20 years, I've always relied on experience to change gear oil. For manual transmissions, it's recommended to replace the oil every 50,000 kilometers or approximately every 4 years. Automatic transmissions may require changes every 30,000 to 50,000 kilometers, depending on the vehicle's manual. Gear oil lubricates the gears to reduce friction. Over time, it oxidizes and becomes viscous, leading to rough gear shifting, increased noise, and even internal gear wear. I remember once delaying the change, and my car struggled to shift gears on the highway, costing thousands in repairs. Driving habits also play a crucial role. Frequent city traffic jams or regular uphill driving may necessitate an earlier change, around 40,000 kilometers. Don't forget to check the oil quality during regular maintenance; if it darkens or smells burnt, it's time to act. A car is like a friend—proper maintenance ensures a smooth and worry-free ride.
