I would either, buy race gas (50/50 mix with pump gas at a minimum)....or switch to e85. I don't recommend playing chemist, mixing random hydrocarbons, unless you are indeed a chemist.
e85 would solve your problem and save you money fairly quickly if it is available in your area.
The E85 is down at the same place where I have to go get the race gas LOL doing the mix is a ploy to keep me from going down there absolutely every time I need gas. Just every third or fourth time would be plenty.
