NGK has got a new spark plug out called the Ruthenium hx. On their website and on rockauto there's a chart and diagram displaying the Rutheniums plugs
Higher ignitability compared to their iridium plugs. The Pspe version caught my eye because they are specifically made for turbo/supercharged engines. Has anyone tried them yet????? I sent them an email asking which spark plug (part# etc), would be equivalent to an autolite103/tr7. I'm assuming the ones listed on rockauto are for stock cars. Just wondered if any of you guys have tried them yet before I try them out and spend 60 on some poop lol ...tell me what y'all think of the plugs? I would post a pic of the diagram but it's not letting me.
Originally Posted by Macksauce
