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2012 CTS4 wagon 3.6
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129 Posts
Discussion Starter #1
the 3.6l engine is direct injection.
most engines like that are highly susceptible to carbon deposit.
that can manifest itself in as little as 35-45K miles.
has anyone experienced this?
 

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2010 CTS4 Premium Sport Wagon AWD 3.6L, Crystal Red Tintcoat
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28 Posts
Put a catch can on, even a cheapie ebay one, and you'll see how much these engines actually drink...
 
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