Thread: Strange Rust-like Dust on AC Pulley?
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Old 03-30-2026, 08:57 AM   #2
0stones0
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Drives: 2010 2SS RS M6
Join Date: May 2014
Location: WI
Posts: 2,642
Not sure when AC is running if that pulley might get condensation but, if so, could just be road dust that collected on it. No clue, just thinking out loud.
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