But mama said..
Ethanol is the devil.
I have an old Jeep CJ that I drive every day, thirty miles each way, to work.
It’s carbureted, not fuel-injected, and designed to run on 1982 gas...
For the longest time I had had issues with it - Either in stop and go traffic or when I park it for fifteen or twenty minutes to shop for groceries. It runs rough or won’t start without a ton of effort.
I narrowed it down to flooding and blamed the float bowl, the pump, the filter...etc. And did a ton of work trying to sort it out...
I stumbled on the cause accidentally: Heat. The heat of the engine in slow traffic or when it was parked after driving it was causing the fuel to boil in the float bowl and overflow into the manifold - resulting in a flooding condition. Further research led me to understand that Ethanol additives cause the boiling point of gasoline to lower - and this can result in the problems I was experiencing.
Luckily there’s a gas station about a half mile from my house that sells non-Ethanol gas. And after running out the old stuff, it no longer floods - ever. I can run all day in stop-and-go traffic in the worst summer heat Georgia has to offer - no problems. Park and come back out twenty minutes after driving it for an hour - starts right up.
Now - why are gas stations around here starting to offer non-Ethanol gas? Because landscaping, construction, tree removal, and other companies are demanding it. Ethanol additives eat rubber - which means their equipment fails faster.
Ethanol isn’t a viable product - as evidenced by the fact that it required law and regulation to create a market for it...
Sunoco Gas Stations have pure gas available off to the side of many gas stations but not with the Commercial pumps out front.
We get non-Ethanol fuel in all three grades here in Michigan from CITGO.
But mama said..