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I have the shudder when accelerating from turns. However, the differential on my 2016 Expy is different than all of the F150 videos I've seen. I have a drain plug at the bottom of the case, but no apparent fill plug. Do I have to drop the entire diff out to change the fluid, and if so is there a video or instructions on how to do that?
If there is a hidden fill plug that I am just missing, could someone tell me how to locate it?
Make sure you can loosen the fill plug before you drain it,
and if you are using a fluid without the modifier already in it, that you add the modifier first. Over 100k miles my dealer uses 2 bottles of modifier and I took up that routine and have not had any chattering or issues.
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