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      05-03-2012, 07:02 PM   #28
Resident Car Audio Guru
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Drives: 2007 E93 335i
Join Date: May 2012
Location: Coral Springs, FL

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BMW uses, either, loc-tite, or paint to keep all their nuts and bolts in place. This is also how they tell if someone has been playing in the car. Granted, the dealers don't reapply this stuff to the offending nut, but they have a tendency to come loose if you're not careful to tighten JUST RIGHT. too tight, and the plastic stretches, causing the nut to come loose; too loose and it just keeps coming off.
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