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transmission fluid change

7.8K views 12 replies 7 participants last post by  IridiumRS400  
If you do multiple drain and refill sessions (a good thing) then put some miles in-between, not all of the changes at once. Why? Most of the fluid is contained within the torque converter, not the oil pan and will not drain out. By driving, it'll mix new with old so the next change it should get more of the 'old' out, although some will still be there...just not nearly as much.
 
you think it’s work if I drain and refill it once. Drive a week then do it again instead of the way linked above ?
How many miles and what sort of driving is done during said week? If there's a good amount of shifting and "transmission use", then that may be an OK timeline. Wouldn't hurt to extend it to a couple/few weeks though, just to get the fluid moved around, nice and mixed.
 
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