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pab12, thanks for the info. i'll check out the inside of the hood for the enigne info. as far as the plugs i did pull one of them and it seems to just be slightly dirty, i didn't measure the gap or anything but just wondering if brand new ones would make a noticeable difference on a 20k mile car and where the plugs are just slightly dirty. i've heard of a guy at the auto parts store telling me he changes his every year. that seems a bit extreme but just wondered if anyone else has changes their plugs more frequently than the mfg suggests, and if so for what reason?
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