Changing spark plugs in a 1989 gmc r3500 454 tbi
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Changing spark plugs in a 1989 gmc r3500 454 tbi
it about time to change the plugs and i was wondering what brand is best for my truck?it originally had ac delco but trying to save money i put champion copper plus in it and it ran fine but not as good as it used to so i was thinking i should go back to ac delco plugs.
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wes104
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04-07-2014 09:57 PM