|
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.
|