Anything but new Champions.
Same here Champion W18 4,000 miles and they look new. Good Power curve 16 mpg average.
Interested in your comment. Why? What problems have you had?
Are you talking about a stock Model A engine? Enjoy.
I am having no problems.
I have used both the champions and autolite, but prefer the champions due to their size/looks.
They seem to have a better appearance on top of the engine then the skinny autolite plugs
I was just curious as to what others were running.
And yes, I am totally stock.