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Old 09-18-2008, 12:02 PM
sunnyyan sunnyyan is offline
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Location: SF Bayarea
Join Date: Aug 2008
Posts: 72
Mein Auto: 05' X3 3.0I/05' Honda S2k
Originally Posted by X3-terrestrial View Post
I've heard that ATF and diff fluid are lifetime fluids? But I might be wrong...
that's what BMW claim, I personally will replace both tranny and diff fluid every 20k or 30k miles.

I'm little confused on diff fluid since I'm not sure how many diffs X3 has due to its all wheel drive system (front and rear diff?)
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