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2009 CTS Blue Diamond 3.6 DI AWD PDQ UAV
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83 Posts
Discussion Starter #1
Has anyone else noticed if their exhaust pipes are showing some rust spots on them? I'm thinking of giving it a quick cleaning before calling for service. Any thoughts?
 

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08 CTS Thunder Gray DI Loaded RWD
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35 Posts
I use metal polish to clean them, seems to do the trick...a lot of water vapor comes out on startup/warmup.
 

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2008 CTS DI RWD FE2
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224 Posts
Yeah, it's just surface rust. Gotta clean 'em more often. :) Otherwise nothing to worry about. Just use a good all metal polish, such as meguiars or mothers. Not only will that make 'em shiny, but it also helps protect them from contamination in the future.
 
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