I searched archives in several of the forums but found nothing on this topic:
Has anybody tried aftermarket spark plugs such as the Splitfire series on their Contour V-6? If yes, did they help, hinder, or make not a heap of a difference in performance?
I'm getting ready to do the 100,000 mile maintenance and was thinking of trying Splitfires but figured I'd check here first.
Dave Keller
1995 Contour SE (no mods, yet)