A couple side notes to the superiority of NGK plugs;
Not sure if the same in the States or not but new offshore produced vehicles coming into Canada sometimes show up with Champions installed as 'original equipment' instead of the actual spec NGK's to save on import taxes!.
I believe they ship the Champ plugs and a few other simple items from here to Japan or wherever the production plant is so a lesser percent of the car is considered produced offshore hence the lesser import taxes.. Of course the Champs run like s**t in many applications and are quickly changed to the spec NGK's by service techs in the know.. This isn't publicised by the manufacturers for obvious reasons also not spread to the dealer level either to keep them from changing them under warranty!.
Also to NGK's credit, they're all I use on the old two-stroke racing snowmachines anymore too.. With mixed or injected oils, Champs and others foul very quickly in comparison to a set of NGK's!.
~ Pete
