Quote:
Originally Posted by warrenw
I did some more reading online, and I did find some info about basically soaking the sill (with window down) with window cleaner and letting it dry out - works for most people - but apparently the 2 series just has greasy window issues? Seems to pop up a lot.
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3 years with a m235i and I never figured it out. Now I just keep a microfiber in the car with glass cleaner. I just wipe it down when it inevitably comes back.