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Has anyone got any thoughts about or experience with using 85% ethanol/15% gasoline as the main fuel source? This fuel is available here at $1.75 a gallon. That is $0.10 per gallon cheaper than the 91 octane premium available. It is rated at 105 octane. I'm thinking that it would be a great fuel for the GN if someone could burn the chip correctly. I currently am running a tank full in place of the avgas I usually run. It feels a little lazy in the mid-range (more timing?) and needs some IAC tuning to get it to idle better. Is this a good idea or is it better used in the SMC tank only?