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Old 08-14-2009, 12:33 AM   #39 (permalink)
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Join Date: Aug 2009
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I use to drive a 26cc stand up scooter with a Tanaka engine. It would run on standard 87 fuel, but I typically ran it on 98 octane + octane booster, aprox 100 octane. It definitly ran about 2mph faster with the higher octane.

With that said, I know where talking about cars mostly, but every engine is different and if MPG is different that will depend on the compression ratio of the engine etc.
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