Quote:
Originally Posted by nemo
Did the plugs you removed show any signs the heat range needed to be changed?
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As in what kind of signs? Color looked good imo. Not wet/dry fouling noted. Ceramic body of plugs from hex head to maybe 1/4" toward top of plug was turning a burnt rusty brown color though. Coil side of hex not threaded end... Not sure if this is normal or sign of too much heat? Around 30k on oem ngk iridium plugs...