How many kilometers does car gear oil need to be replaced?
3 Answers
Car gear oil should be replaced every 60,000 to 80,000 kilometers, with the replacement locations being the manual transmission and rear axle. Below is relevant information about gear oil: Functions of gear oil: Gear oil mainly refers to the lubricating oil for transmissions and rear axles. It differs from engine oil in terms of usage conditions, composition, and performance characteristics. Gear oil primarily serves to lubricate gears and bearings, prevent wear and corrosion, and assist in heat dissipation for gears. Common gear oil specifications: Most foreign automotive gear oils are classified according to SAE viscosity grades and API performance categories. Conventional vehicle gear oils typically use specifications such as 75W/90, 80W/90, and 85W/90.
As a veteran driver with over a decade of manual transmission experience, I used to think gear oil changes weren't important. I delayed until 80,000 km, and the transmission noise became unbearable, costing me nearly 2,000 yuan in repairs. Now wiser, I recommend manual transmissions get checked/changed every 30,000-60,000 km. Automatic transmissions are more flexible - follow the manual's 40,000-80,000 km guidance. Driving habits matter too - my frequent mountain driving causes faster gear wear, requiring more frequent oil changes. Regular maintenance extends vehicle life and detects issues early, like contaminated oil or low fluid levels. During oil changes, I always have mechanics inspect brakes and steering systems to prevent unexpected costs - small investments for big peace of mind, avoiding roadside breakdowns. Especially before long trips, ensure clean, stable oil for safe driving - economical and reliable.
As a young driver just getting on the road, I didn't know about gear oil changes when I first got my license. Later, a friend reminded me that it's generally recommended to change it every 50,000 kilometers or so, depending on the vehicle model. Manual transmissions require more frequent changes, possibly every 30,000 to 60,000 kilometers, while automatic transmissions are more lenient, around 40,000 to 80,000 kilometers. I always consult with mechanics or check the vehicle manual to avoid guessing wrong. Not changing the oil can lead to severe gear wear, skyrocketing repair costs, and affect driving smoothness. Now, I make it a habit to add an oil check during every annual inspection and confirm maintenance records before long trips. This ensures peace of mind, reduces unexpected breakdowns, and is especially important during heavy traffic commutes when oil contamination is more likely. Regular maintenance is low-cost but offers high returns.
