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BMW 3-Series (E90 E92) Forum
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Black coat under car
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04-21-2013, 11:49 AM | #1 |
Second Lieutenant
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Black coat under car
I know nothing about car maintenance and I've been messing under my car to install a trailer hitch. Worked great but I found this thick black sticky coat sprayed under part of the chassis. It's not everywhere, just some choice areas. I'm just curious what it is. I had to cut a piece of metal to fit the trailer hitch and that exposed some bare metal and I was thinking of just re-coating this to prevent rusting. What is that black substance?
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04-21-2013, 11:46 PM | #5 | ||
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[QUOTE=ft1338]
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04-22-2013, 11:34 AM | #8 | |
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