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Old 11-03-2010, 11:19 AM   #4
Registered User
Join Date: Apr 2003
Location: Haverhill, MA
Posts: 3,323
My Ride: 2001 330CI
There seemed to be an oily coating that doesn't need to be removed and then there is the Z coat that is on the swept area. When braking for the first few times this coating will be worn away. Don't be freaked out! There will be NOISE and VIBRATION involved but it goes away quickly.
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