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      09-22-2011, 11:32 AM   #4
Andy M
Canada
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Drives: 09 BMW 335i xdrive
Join Date: Mar 2008
Location: Toronto

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Corrosion resistance of aluminum depends on the type of aluminum alloy used (e.g. AL 5XXX vs AL 2XXX). A lot of times you clean keep it corrosion-free by just periodically cleaning it with an aluminum cleaning solution.

I noticed that OEM materials tend to be better than aftermarket materials which is why they do cost more.
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