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Duffman · 06-03-2008, 12:23 AM

Likely worse, a lower heat range plug is better if you are having engine detonation problems, I would think that the highest heat range that you can get away with would stay clean and perform best.

06-03-2008, 12:23 AM	#2 (permalink)
Duffman Master EcoModder Join Date: Mar 2008 Location: Edmonton, AB, Canada Posts: 531 Thanks: 11 Thanked 12 Times in 11 Posts	Likely worse, a lower heat range plug is better if you are having engine detonation problems, I would think that the highest heat range that you can get away with would stay clean and perform best.