What to Do If There Is Too Much Transmission Fluid?
2 Answers
When checking transmission fluid, there are usually temperature restrictions. Generally, the transmission fluid temperature should be between 25-45°C, but some models are different, such as the Buick LaCrosse which requires above 65°C. The following are the steps to handle excessive transmission fluid: 1. Start the engine or drive to bring the transmission temperature within the specified range. 2. In idle state, press the brake pedal and leave the gearshift lever in each gear for 10-15 seconds, then shift to P or N gear and check if the fluid level is normal. 3. The fluid level should preferably be between the minimum and maximum lines, closer to the maximum line. Note: Ensure that your checking method is correct. If the method is correct but there is still excess fluid, it is not good as it may cause the oil pump to suck in air, generating bubbles that affect shift pressure and comfort, as well as lubrication effectiveness.
Last time I changed the transmission fluid, I encountered an overfill situation. As a result, the car shifted very sluggishly and made a buzzing noise. I asked a mechanic about it, and he said that overfilling the fluid can cause excessive internal pressure, which may lead to leaks in the seals and, in severe cases, damage to the solenoid valves. The solution is actually quite simple: just go to an auto repair shop and have them use specialized equipment to extract the excess fluid. During regular maintenance, make sure to keep an eye on the workers to ensure the correct amount of fluid is added—the transmission fluid level should be in the middle of the dipstick for safety. Additionally, overfilling can raise the fluid temperature and affect cooling, which can shorten the transmission's lifespan over time. So, this is something you can't afford to be careless about.
