Can Transmission Fluid Be Added?

[AddysonMarie]

Transmission fluid can be added. Long-term used transmissions: After prolonged use, transmissions often exhibit gearshift jerking. The situation significantly improves after replacing the transmission fluid because the viscosity coefficient of old oil can no longer match that of new oil. After replacement, it returns to the ideal state designed originally. Using incorrect oil products: In some extreme cases, using the wrong transmission fluid can even lead to transmission burnout. This is because not only is the viscosity carefully calculated and matched, but heat dissipation is also meticulously designed. If the transmission fluid's heat-carrying capacity is too strong or too weak, it will reduce the efficiency of the cooling mechanism, thereby affecting heat dissipation and causing transmission burnout.

[Duane]

I often check my car's transmission fluid level myself and believe that adding transmission fluid is completely doable as long as you know how. First, transmission fluid gradually depletes, especially in older cars or those driven frequently. Before adding, ensure the engine is cold, use the dipstick to measure the fluid level, and if it's below the low mark, add a bit of the same type of fluid. Don’t mix different brands of fluid randomly, as this can easily cause transmission issues. DIY is simple—just get a funnel and the correct fluid—but be careful not to overfill, as this can lead to overheating and damage the transmission. Regularly checking the fluid level, like taking a quick look every few thousand kilometers, can prevent major repairs. After my last top-up, the gear shifts became much smoother. Remember to check the manual first to confirm the correct fluid type.

[VivienneDella]

From a safety perspective, I don't recommend casually adding transmission fluid, as improper operation can lead to serious consequences. The transmission system is highly precise, and fluid levels that are too high or too low can affect performance. I've seen cases where friends who didn't know better added the wrong fluid, resulting in transmission slippage and costly repairs. It's best to have a professional technician check the fluid level—they can determine whether it truly needs topping up or if a complete fluid change is necessary. Contaminated or leaking fluid can also cause low levels, and simply adding more without addressing the root issue will only delay the problem. Develop a habit of regular maintenance, such as checking the undercarriage monthly for any oil stains, to save yourself time and trouble.

[IslaDella]

The function of transmission fluid is to lubricate and cool the internal gears. Of course, you can top it up when the level is low, but this is only a temporary solution. Over time, the fluid becomes dirty and degrades, so it's best to completely replace it every few tens of thousands of kilometers rather than continuously adding more. When topping up, make sure to use the type of fluid specified in your vehicle's manual, as automatic and manual transmissions may require different fluids—don't mix them. To check the fluid level: turn off the engine, wait a few minutes, pull out the dipstick, wipe it clean, reinsert it, and ensure the level is between the high and low marks. I usually learn to do it myself—it's quite simple—just don't forget to tighten the cap securely.