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      04-25-2012, 02:22 PM   #13
New Member

Drives: 2009 E92 M3
Join Date: May 2011
Location: Tampa, FL

iTrader: (2)

Originally Posted by THE TECH View Post
While the PS21 gel works decently, I don't agree that it will prevent rust on the rotors. It lessens it some but definitely does not prevent it.

Seeing as how the rotors get rusty after a hard rain (car sitting) I don't see how the shampoo affects this at all. Seems like just water will rust the rotors.

This is my biggest peeve when/following washing. My newly cleaned wheels get trashed with orange "dust" and I have to clean them again- that's why I don't even bother drying my wheels with the rest of the car since I'm jut going to clean them after the first post-wash drive anyway....