Personally, I gap them just slightly under spec (usually right out of the box like that) because it will slightly widen after so many miles and it's easier on your ignition components because wide gaps over spec need higher voltage to spark. Makes me feel better because sometimes I just forget about the things and run them a bit too long . Nothing like my friend though who ran his original plugs to 120,000+ miles and the gaps were insane with almost no electrode left :doh:
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