Quote:
Originally Posted by DocWalt
Amusingly...
I was a bit tired of the chattery/binding from the cheap break in fluid... So I swapped to the OSG fluid, haha.
With the Motorcraft fluid, the diff felt like it was sort of sticking. Driving around casually I'd go to turn in and the car sort of fought me until I took my foot off the gas and went to neutral throttle and the diff opened up.
The diff took a bit to work the other fluid out but now it's essentially silent and smooth. Feels really good. Just yeet it around corners and floor it and you get a super smooth progressive slide, like the diff is actively working to push you forward and arrest the slide. I can't wait to see how it does at autocross now!
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Excellent to hear! It's incredible what a difference the right fluid can make in the dif. I remember when the fluid in my E46 was going bad and the rear was starting to bind around parking lot turns. It was much stiffer feeling....replaced the fluid with fresh OEM immediately and it all went away and the rear was smooth to drive again.
Should continue to be a monster for you at autocross and will probably have lower dif temps if there is no more noise and it's smoother now.