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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > 335i auto transmission fluid analysis



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      07-24-2012, 06:58 AM   #1
egregor
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Drives: 2007 335i sedan
Join Date: May 2012
Location: United States

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335i auto transmission fluid analysis

I just figured I'd add another data point on aging ZF "lifetime" ATF in case it helps anyone else.

Some background: The car was at 72K miles, a little under 6 years old, using factory fluid. Car has never been tracked (unless by previous owner) and I avoid redlining, although I'd say I drive it a bit more spirited than most. The fluid was pitch black when it came out, but did not smell burnt.

The fluid actually seems to be just fine, spec-wise, although the transmission itself looks like it might have worn a bit. Oh and if anyone has any knowledge on this tranny and can provide any additional insight into the results (e.g. why the very high copper/other metal content) that would be great.

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