What is the process for changing automatic transmission fluid?

[McEsther]

Automatic transmission fluid change steps: 1. Lift the vehicle and place a large container underneath to catch the used fluid; 2. After a few minutes when most fluid has drained, carefully remove the last oil pan by hand as it still contains significant amounts of used fluid; 3. Carefully remove the transmission fluid filter; 4. Take off the oil pan gasket and clean surrounding residue - use tools if necessary for hard-to-reach areas; 5. Wipe all cleaned transmission filter components with lint-free cloth and reinstall them one by one; 6. Thoroughly clean surfaces of replaced components, ensuring no water or oil stains remain to prevent leaks; 7. Refill with manufacturer-approved fluid.

[CadenLee]

I've personally changed automatic transmission fluid several times and feel quite comfortable with it. Generally, the process involves several steps: First, warm up the car for a few minutes to get the engine running and let the fluid temperature rise, which makes it thinner and easier to drain. Then, safely lift and secure the car, use a wrench to loosen the drain plug on the oil pan, and remember to place a container underneath to catch the old fluid—it has a very pungent smell. After draining completely, tighten the plug and replace the transmission filter, which is often overlooked but extremely important. Next, add new transmission-specific fluid slowly using a funnel, ensuring the amount is neither too much nor too little, and use the dipstick to measure the exact fluid level. Once everything is reassembled, start the engine and test the gears to ensure smooth shifting without any unusual noises. I recommend changing it every 60,000 kilometers; don’t delay too long, as degraded fluid can become sticky and cause sluggish shifting or part wear, leading to costly repairs. For tools, just prepare a jack, wrench, and flashlight—no need for professional equipment. Doing it yourself saves money and helps you learn some skills.