Champion spark plugs are just fine, but "needing a hotter plug for today's gas" is pure unsubstantiated male bovine excrement.
The actual truth is that "back in the day", tractors WORKED for a living, long hot days of "pulling their guts out", which limited how "hot" of a sparkplug you could use without causing "detonation", and blowing a hole in a piston.
With few exceptions, there's very few old tractors today that experience that sort of "balls to the wall" work for 8 or 12 hour days, which explains why sparkplugs that worked perfectly well in working tractors foul in lightly used tractors that put around or "parade queens".
(Please don't shoot the messenger for telling it like it was/is!)
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
... [Read Article]
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