I drive a number of carbureted vehicles. None of them perform as well as they did before Ethanol was mandated. Even with only 10% my fuel mileage is less, they are harder to start, the stuff boils out of the carb after a few minute heat-soak, gotta whirl it over a few rounds before it starts beause it's flooded. And it does attack rubber. I was using a can to get an old Jeep running. I had a rubber hose running from the fuel pump into it. I left the hose down in the gas for a few days. When I pulled the hose out of the can the end that was in the gas was swelled up. And this was a new piece of hose.
Don't get me started on the direct and indirect costs of this program.
Dallas