Which Plugs 2
Posted: Wed Apr 03, 2013 4:07 am
As is the way, I came across this while searching for some long deleted Champion N57G Plugs. Some good reading if you are into this sort of thing (which we all are) 
http://www.knology.net/~rv7rotary/Sparkplugs.htm
Enjoy.
http://www.knology.net/~rv7rotary/Sparkplugs.htm
Enjoy.