Some good points, but you’re conflating E15 with E85. The latter can only be burned in Flex fuel vehicles, while the former can be burned in 2001 and newer vehicles (but no ethanol should be used in small engines such as generators, etc). Also, in many places, E10 will probably not be available, replaced by E15, due to state mandates.
Imt well aware of the.difference from.E85 to E15 I pointed out that BOTH by law must have separate pump nozzles. One is yellow the other is blue. The EPA says every car newer than 2001 is legally able to burn E15 only flex fuel can burn E85. I have had two vehicles that were flex fuel and not labeled as such but the VIN showed they were manufactured in a run with flex fuel parts either was fully capable of running E85,E15 or E10. My S60 turbo loves the extra octane of ethanol if E85 was not more expensive than 91 I would be running that this is not a daily driver it’s for high speed road trips at 100+ mph I also had an F150 that was flex fuel from the factory but was not labeled as such again the VIN code showed that was the case if.You looked in the fuel line you could see the ethanol.sensor from under the chassis proving it was a flex fuel OEM. point is modern engines can burn E10 which since the 2000s has been a federal government requirement nation wide this means every car made since 2000 has the fuel lines and correct rubber types to handle ethanol. The difference from 10 to 15% is so small testing showed no significant difference in material compatibility to Between E10 & E15 this is why fedgov approved it for cars which already by law must be E10 ready. Too many people don’t bother to one read the actual.text of the EO or law and two don’t know the requirements for dispensing a limited use fuel.
E10 will still have to be available for older engines made SORE engines neither is EPA approved for E15 or higher a state cannot take E10 away as they would be breaking federal law by forcing noncompliance of fuel usage. This is the exact reason E0 pumps exist at marinas and select fuelling locations inside a EPA air quality none attainment area there must be a fuel supply for older engines and SORE engines to have legal fuel to burn. That’s not to say it’s not priced at a point to discourage on road use in none attainment areas. E0 is fourty cents more per gallon than 87 and 20 cents more than 93 at the one place that has E0 in this area which happens to be on the hey leading to a lake. E10 is here to stay it will most likely be the only low ethanol blend in all areas soon with E0 being specialty fuel at limited pumps just for boats and chainsaws and the like.