Quote:
Originally Posted by greg328
What about the ZF8 transmission? Is it lifetime fluid, or does it need drain/refill at certain mileage/time? My 2011 had 70, xxx miles on it currently.
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It is better to do it between 60k to 80k miles.
I did mine at 60k even if it was working flawlessly.
After the fluid change, there has been a small improvement in smoothness between gear shifts and better MPG.