Quote:
Originally Posted by spudz
only put back in the factory ac delco plugs... hell put those back in. they are still good to go.
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AC-Delco is not the only quality spark plug manufacturer! Half of the OEM plugs in GM trucks are made by NGK. So why whouldnt a platinum/iridium spark plug from NGK do same job & still last 100K?
AC-Delco is to busy making replacment 'high profit" spark plugs for our trucks than keeping up with demand on the production line.
Dont believe all the "dealer rhetoric" you have been taught.