Figure this one Out

[P.Webb]

Posted on another thread, but applies here too...

You can't beat the NGKs @ $1.78 each. IME, every bit as good as the other plugs mentioned (not saying the Lodge aren't a good plug) at half the price.

I'll never waste money on the overpriced Bosch plugs again.

That multi-electrode thing has to be a gimmick. My cars run the same or better on conventional plugs of the correct heat and gap.

-Peter

[MrT]

It might be a gimmick, but reciprocating aircraft use dual gap plugs for a reason. I suspect it is for slightly better ignition and therefore power. They have dual plugs, too. From an electrode wear standpoint, the gap will widen over time. When a second gap is there which isn't widened, it will become the primary one. Electrode (plug) life would not be proportional to the number of gaps, but it should go up with the number of gaps to some extent. I'd not expect a single gap plug to last for 60 k mi as I _suspect_ the Lodge plugs did in my wife's 164L. Just my decidedly non-expert opinion....

Michael