Another JR Posted September 19 Share Posted September 19 On 9/17/2024 at 4:44 AM, bruceb58 said: My point is, that's not a drain plug. The difference you will get out while not running or not is negligible. The pan has to be dropped to get the fluid out. Have you ever changed transmission fluid on a 10 speed heavy duty? Agreed. I was just pointing out that you will get some fluid out of the check port when it is shut down. No I have not changed fluid on a 10 speed. My truck is a 2021 with the 6 speed. Quote Link to comment Share on other sites More sharing options...
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