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Old 04-24-2013, 05:55 PM   #12
3rd Gear Member

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Join Date: Oct 2009
Vehicle: '07 Mustang GT
Location: Utah
Posts: 722

So the plugs being like that is from the blowby of oil that a catch-can will prevent? If he got one will they have less carbon buildup? Mine looked like that but my car runs just fine.
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