
Transmission oil is generally replaced every 50,000 to 80,000 kilometers. Introduction to transmission oil: The transmission uses gear oil, which is also called transmission oil. It is a type of transmission lubricant used for lubricating various gears in transmissions, reducers, and differentials. Functions of transmission oil: Reduces friction and wear, controls clutch friction and synchronizer performance. Bears low-speed high torque, vibration loads, dissipates heat, reduces vibration and noise, removes contaminants at gear meshing points----cleaning function. Prevents corrosion, pitting, and surface metal tearing, isolates metal surfaces, and prevents direct contact between metal parts.

I've been driving for almost fifteen years, and transmission fluid replacement really depends on the vehicle model and driving habits. For automatic transmissions, it's recommended to change every 40,000 to 60,000 kilometers. For example, my old manual transmission car went 70,000 kilometers before a change and still ran smoothly. But if you frequently drive in city traffic with heavy congestion, which increases wear, you should consider changing it around 40,000 kilometers. Aging transmission fluid can make gear shifts sluggish, and the color changes from bright red to deep black with a burnt smell—that's when you need an immediate check. Don’t just rely on the manual’s numbers; I check the dipstick monthly—new fluid is shiny, while old fluid becomes sticky. Delaying replacement can lead to repair costs easily exceeding tens of thousands, which isn’t worth it. Regular maintenance saves hassle and money, and safety should always come first.

As a novice driver, I only learned last year that transmission fluid needs to be changed regularly. After researching, I found that automatic transmissions typically require changes every 40,000 to 80,000 kilometers, while manual transmissions might be fine beyond 50,000 kilometers. However, the key factor is the driving environment—less highway driving means less wear, extending the change interval; frequent starts in congested areas accelerate fluid degradation, requiring earlier changes. I have the repair shop check the fluid quality every 30,000 kilometers, and if the color and smell deteriorate, I change it immediately. Don’t wait until gear slippage occurs to regret it, as that increases fuel consumption and may damage the entire system. Saving on maintenance costs to avoid major repairs is crucial, so developing good habits ensures safety.

As a regular mom, I always prioritize driving safety while taking care of my family. Don't delay transmission fluid changes—automatic transmissions should be serviced every 40,000 to 60,000 km, while manual transmissions can wait a bit longer but shouldn't exceed 100,000 km. Regularly checking the dipstick is crucial; if the fluid turns from bright to dark, it's time to take action. I make it a habit to have a simple vehicle inspection every six months to ensure smooth gear shifts and prevent sudden breakdowns. Never underestimate this maintenance—it prevents accidents and saves money, being far more cost-effective than transmission repairs. Safety first for my family's peace of mind.


