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Changing automatic transmission fluid9/25/2023 ![]() The remaining drains were around 2 and 1/4 quarts. The first drain emptied 2 and 3/4 quarts after truck sat overnight. Then pump fresh atf into trans with an additional 1/4 to 1/2 quart. Drain trans fluid into pan, transfer pan to oil container and measure. I used an old 1 gallon oil container as my measuring cup. Notice how with each cycle the fluid get better, less brown more red. Here is a picture of the four drain cycles with one drop of fresh clean fluid. I did 4 drain, measure, fill cycles of the trans fluid. I recommend overfilling the trans by a quarter to half a quart when cold so you don’t have to add fluid while running once it’s hot. Trans fluid on a hot cat wouldn’t be a good thing inches away from your face. I don’t recommend trying to add fluid after pulling the check plug. I would like to thank Toyota for placing the hottest part of the exhaust inches away from the fill plug on the transmission. With the thermostat closed temps rise to 195 and then go up to 212 ish on climbs. This is with an air temp of 85 to 90 degrees. My average running temps are around 160 degrees after 25 minutes of freeway driving, temps rise on hill climbs and then quickly fall to the 160s. I have also left the thermostat pinned open, temps are way above freezing here in SoCal. But the bad part was the color and burnt smell! I definitely waited too long to change fluid. My trans was about a 1/3 of a quart low after 50,000 miles. ![]() I added 3/4 of a quart of new atf.Ĥ- Using the torque app I warmed truck up until trans was at 95 degrees then went under truck while it was still running and used a 5 mm Allen socket to pull the check plug out of pan.ĥ- once fluid slows to a drip reinstall plug. If you don’t have a trans cooler go to the next step.ģ- I then overfilled trans while the vehicle was cold. I WILL BE CHECKING IT MORE OFTEN NOW! EVERY 5000 to verify color and status.Īt 51,000 miles I checked the fluid height for the first time.ġ- level vehicle front to rear with a jack.Ģ- If truck has tow package, pin the thermostat ,on the side of the trans, open using a screwdriver to push button in then put a piece of bailing wire through to hold tstat open. ![]() I just flushed my transmission for the first time in the taco at 54,000 miles. ![]()
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