| Hi guys, As you may remenber an earlier post of mine, I assume the PO installed a single wrong plug , however, to my amazement as I am pulling out each and every plug... they are all wrong! a acdelco brand! wtf? Pictures will follow shortly!. My back is soo sore. Did some major tune up. The plugs have a light shade of brown on each one of them. no oil soak , not gas wet either!. I assume thats a good sign? Do you guys think I may see a nice performance increase now that I have all right NGK plugs in? thanks everyone!
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