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unleaded or primium gas?
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09-22-2005, 04:51 PM
f5fstop
Hummer Guru
Join Date: Jul 2005
Location: Idaho
Posts: 4,744
people trust a car manufacturer to design, test and build a car, but never trust their recommendations about fuel/oil etc.
only good thing is with the high compression of this eng; you should not get carbon buildup if prem is used
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