It's how hot it runs. Hotter better for long runs at high revs and tuned motors, cooler better for stop start and round town. I run NGK BR8ES in my lammy which is somewhere in between
@EB started
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It's how hot it runs. Hotter better for long runs at high revs and tuned motors, cooler better for stop start and round town. I run NGK BR8ES in my lammy which is somewhere in between