Quote:
Originally Posted by Ashock
So I've run D4-ATF in my 6MT 128i for about two years now. I think I've put about 20K KM's so far with the D4. I loved the feel of the D4 after initial change and it's been giving me consistently smooth shifts. I used to have a problem getting into first gear with the original fluid that BMW put in the car. Ever since moving to the D4-ATF, I never had that problem come back.
Now, after a couple years of running this fluid, it seems my 1st to 2nd shifts are getting tougher and requires a bit of strength to go into gear. I'm feeling slight degradation in shift quality between 2nd and 3rd as well.
Is it too soon to change out the transmission fluid again? Or should I do it since it seems the fluid has degraded.
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Can you just sample it, without draining the whole thing, then refill what you sample out? If so, you could send a sample to Blackstone to see if it has sheared too much already.