Quote:
Originally Posted by Ultramaroon
I've pulled perfectly good plugs from 200 Kmi engines and have no plans to mess with mine unless something else goes wrong. Not saying they're bullet proof. Just sharing my experience.
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Mine had 104,000 miles on the OG plugs. Had them replaced with the valve springs. Replacement set was still going strong 130000 miles later.
I don’t recommend that to anyone but I was never concerned about it. If I was tracking I suspect it would have been different of course,