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      12-26-2012, 10:03 AM   #26
MyFten
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Drives: 2012 F10 M5
Join Date: Jul 2011
Location: Hamilton ON

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Definitely condensation,
nothing to worry about, short trips to work will do that.
You can wipe it of clean, go for a spin ( about an hour drive )
open the cup again and check it out, it should be clean with a bit of misty oil residue. Hope that helps...