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December 13, 2020 at 2:16 pm
#225122
I guess Champion created the H10 specifically to make an idiot out of me. That is the only time I have ever seen a Champion that is out of whack in the heat range like that. Champions are generally hotter as the number goes up, while for whatever reason, NGKs go down in number as the heat range goes up. Sometimes I just cannot win.
Long live American manufacturing!