How Often Should the Transmission Fluid in an Automatic Car Be Changed?
2 Answers
Automatic transmission fluid should be changed every 2 years or 40,000 kilometers. Transmission fluid, also known as gear oil, is used to keep the gear system clean, lubricate the transmission components to extend their lifespan, and provide effective lubrication even in low-temperature conditions. It also helps reduce oil loss under harsh operating conditions. Maintenance methods for transmission fluid: 1. Change the fluid regularly. 2. Frequently check the fluid level. 3. Avoid coasting in neutral. 4. Avoid skipping gears when upshifting. 5. Do not force the transmission into neutral. 6. Minimize the time spent idling to warm up the car. 7. Avoid gear grinding when shifting. 8. Clean the transmission regularly.
I recommend changing the transmission oil according to the vehicle manufacturer's manual, typically every 40,000 to 60,000 kilometers. If frequently driving in congested urban areas or towing trailers, the fluid deteriorates faster and may require replacement as early as every 30,000 kilometers. Aggressive driving or long-distance high-speed travel also accelerates oil degradation. During replacement, pay attention to the fluid's color and smell - fresh oil is clear and odorless, while darkening or foul odor signals immediate attention is needed. Regular maintenance protects internal components, preventing slippage or sticking, thereby extending overall lifespan. Different vehicle models have varying requirements; it's best to refer to the manufacturer's recommendations rather than cutting corners to save money, as repair costs for problems can be much higher. I personally check mine every two years for peace of mind.
