
12-02-2012, 06:55 PM
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CC Member
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Join Date: Jan 2007
Location: Melbourne,
VIC
Cobra Make, Engine: Harrison, 6.0L Chev
Posts: 2,513
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Not Ranked
Tomcat, I think you're referring to carbon build up on piston heads, which is a different issue. In a DI engine, fuel doesn't pass through the inlet valves, but crankcase gasses and EGR vapours do - a fuel additive does very little to help the situation.
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