Thread: possible rod knock 2013 n55
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      08-13-2023, 06:12 AM   #7
SuperLomi
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Drives: 2013 335i M-Sport
Join Date: Nov 2020
Location: KY

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Quote:
Originally Posted by F32Fleet View Post
Oil UOA will probably not show signs of worn bearings. BMW stopped using lead before your car was built.

Just peak at your oil filter and housing. Look for glitter.
It will show a high copper ppm.
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