Will someone
pleeease enlighten me as to what the he!! difference it makes whether you run ACs in Fords or Autolites in GMs, etc...
I recognize that one plug brand may be "better" than another but I just don't get why, given the correct electrode projection, heat range, etc., why you gotta match GM motors with AC plugs, etc., etc.
What about NGK, Bosch, Champion? What are they good for? And why?
(Or is it just me?
)