Quote:
Originally Posted by jkv45
Not sure how that relates to our system of octane measurement, but running higher octane than the manual suggests is not an advantage, and will cost you mileage and power. Gas with ethanol will cost you mileage, but a F.I. engine will correct for the leaner mixture so it will run about the same.
Run higher octane "Premium" only if you need to get away from gas with ethanol.
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In the manual for the Ninja 250, on page 28, it says:
"Do not use an E10 fuel, or any fuel with an ethanol volume content more than 5 % in this vehicle. It has not been tested and certified for use with such fuels. Damage to the engine and fuel system, or engine starting and/or performance problems mayresult from the use of improper fuel".
98 has been, or still is, ethanol free around here. That's not the case for the other possibility, 95 octane. So, I always used 98 octane when I could.