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ZRapid-1 · 11-05-2010

AC Delco 61-402 with a 0.035 inch gap.
Haven't seen any test results which show there is a better choice.

I plan to change them every few years.
This is in contrast to new cars with platinum plugs and their 100,000 miles change interval.

11-05-2010	#14
ZRapid-1 Join Date: Sep 2010 Location: Bethany, CT Posts: 119	Re: Which Brand of Spark plug do you run?? AC Delco 61-402 with a 0.035 inch gap. Haven't seen any test results which show there is a better choice. I plan to change them every few years. This is in contrast to new cars with platinum plugs and their 100,000 miles change interval.