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      04-21-2019, 09:00 PM   #4
drwankel
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Drives: E92 M3, G20 M340i
Join Date: Feb 2016
Location: Bothell, WA

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Quote:
Originally Posted by InnerBlueSkies View Post
Looks like Lithium grease.
I should also mention the substance appears to be hard and you can kinda scrape it off. I don't think its grease.

The exhaust was put on last summer, and it makes me thing that it'ts something from inside the exhaust since it only appears on that one tip.
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