How Many Kilometers Should Manual Transmission Fluid Be Replaced?
2 Answers
Manual transmission fluid is generally referred to as gear oil. Under normal driving conditions, manual transmission gear oil should typically be replaced every 2 years or 60,000 kilometers. Hazards of not changing transmission fluid: Transmission fluid working under high-speed and high-temperature conditions for extended periods can deteriorate and evaporate, thereby exacerbating the wear of mechanical components and, in severe cases, damaging internal transmission parts. Long-term failure to replace transmission fluid may result in the car struggling to start when cold. Daily maintenance of manual transmission: After driving a certain distance, check for any leaks in the transmission; ensure the transmission has sufficient oil; replace the transmission fluid promptly.
As a veteran driver with over a decade of manual transmission experience, I generally stick to changing the transmission oil every 40,000 to 60,000 kilometers. I remember once going up to 70,000 kilometers without a change, and I could clearly feel the gears grinding and hear them creaking during shifts. My advice is not to skimp on cost or convenience—when changing the oil, make sure the mechanic checks the condition of the oil pan bolts and seals, as leaks in these areas can lead to insufficient oil levels. Those driving in mountainous terrain or carrying heavy loads should change the oil even sooner, as wear and tear is much more severe than in typical city driving. Oh, and for those in colder winter climates, it's best to use synthetic oil with a 75W-90 viscosity rating for better low-temperature flow.
