well i think sinc ei have cast heads and everything that running down the highway its heat soaking.. the coolant stays 170, but it just heat soaking. and maybe starts pinging on 93 and i cant hear it cause its so loud. but ive personlay felt a difference and i will always run 110 on sat nights now, or 114, but if i go on a cruise just 93 is fine.
but now i HAVE to use it if im racing
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stock suspension, stock bottom end, 93 octane, drag radial, 60 footin pickup truck, 1.60 60 with a 11.50-on the small stage