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**kwmech** · 04-28-2023, 11:14 AM

It is hotter (as mentioned) and also comes with an extended tip ( S designation). What do the old ones look like? With todays crummy fuel I'd say stick with the 45s

04-28-2023, 11:14 AM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,421	Re: R44 or R45S plugs?? It is hotter (as mentioned) and also comes with an extended tip ( S designation). What do the old ones look like? With todays crummy fuel I'd say stick with the 45s