The stations near me that sell Unleaded 88 also sell E10. I’ve been aware of the lower energy content of E15 for a while and would never pump it into our Odyssey. I’m not worried for myself and my wife. She typically buys gas at Costco, and they only sell E10.
I am not going to panic, from the Yahoo article:
Why Ethanol is an Engine Killer
If you drive a modern car built after 2001, you are generally in the clear. The Department of Energy and the EPA have run exhaustive, multi-million-mile tests proving that 21st-century cars have the advanced oxygen sensors and fluoropolymer-lined fuel systems required to handle higher ethanol concentrations.
Concerning older vehicles:
But if you drive a pre-2001 vehicle, E15 is your worst enemy. Ethanol is a powerful solvent. More importantly, it is highly hygroscopic, meaning it actively sucks moisture right out of the air. When that water-logged fuel sits in an older gas tank, it causes catastrophic phase separation.
In older cars, that high concentration of alcohol will eat straight through standard rubber seals, dissolve plastic fuel lines, and even corrode certain aluminum alloys inside the engine.
I have been using E10 in my cars since the 1980’s, E15 isn’t going to make much difference.
I haven’t driven my Plymouth much during the last 5 years, the fuel was old. I drained 5-year-old fuel from the tank, took 2 gallons of old fuel to the oil/gasoline disposal site and burned one gallon in my lawn mower.
One of my cars is a 2020. I’m not worried about running E15 in it.
My other care is an EV. I don’t think even E85 will have any effect. 
Lawn care pros, boaters and classic car owners know full well to avoid E10. They will avoid E15 as well and purchase ethanol free fuel. I run my generator only on E0.
If you live in a state that does not allow E0, well, tough luck. E15 is unlikely to hurt you any worse than E10 already does.
With an average age of cars on the road is 13 years, that means the number of 25 year old cars still on the road is statistically very low. So in practical terms, e15 will not be a problem.
I’ve been using E-10 in my mower and snowblower for decades without any problems what-so-ever. My current mower is over 20 years old. Only place I can even by E-10 is at marinas or some gas stations that are near one of our racetracks. Closest one is over 10 miles away in Epping NH.
One thing to do when you put the piece of equipment away for the season is to start mower or snowblower then turn the gas flow off and let the carb run dry. You don’t want any gas sitting in carb for long periods of time.
And this is why!
Most people let their equipment sit around with fuel in the tank and in the float bowl. E10 plays havoc with that creating corrosion.
I store my generator with nearly a full tank of E0 and stabilizer. The float bowl is emptied after every start. The start of every hurricane season I run the generator until it is fully warm and then drain the fuel. I replace it with more E0 with stabilizer. It will run just fine on E10 and that is usually what I buy if a storm is headed my way. The old fuel and the excess goes into my truck.
E0 is readily available a couple miles from my home but I live pretty close to the gulf coast.
I’ve been doing that since the 60’s - before any oxygenates were ever added to gas.
At the station I use local Yamaha dealer was filling up one of their demo boats. He said the Yamahas were designed for E10, but run a lot better on the E0. That’s all I use in my lawnmower and generator.
Not overly concerned. My Mustang (2016) is has a dyno tune for 93 octane and that’s what it gets. My F-150 (2019) is new enough so that E15 won’t be an issue, my TR6…well, it’s carbs need to be rebuilt anyway, and I’m going to have compression test done on it in about 3 weeks and we’ll see where we’re at at that point. Hardened valve seats will have to be done at some point, the compression test should tell me how soon that point is going to be. But on the plus side, my generator runs on propane, so I’ve got that going for me.
Can’t say a dollar more a gallon is an energy emergency. But I never use the stuff and only the non oxy stuff in small engines. Coming through Iowa late at night I got the 15 by mistake. No problem with it anyway.
I used E10 during the 1990’s in my carbureted cars, I never paid extra for “off road” grade gasoline. I didn’t have the budget to use boat fuel in a daily driver that got 10 mpg.
I had to replace the accelerator pump in my 1973 Ford every 18 months, I think the local auto parts warehouses had an old inventory of carburetor kits that predated ethanol use.
I still use E10 in old cars but only drive 100 miles/year. E10 is mandated in this area due to air quality concerns.
When I had lots of gas powered yard tools that got used almost year round, I just used E10. Anything that got prepped for storage got filled with fuel and the float bowl drained. I found that keeping them full prevented moisture and rust inside the tank. That included the 2 cycle stuff like chainsaws and the blower. Generally no issues but I did have to replace the fuel pump in the Briggs and Stratton engines occasionally. I haven’t had a carbureted road car since1989.
The local ethanol free gas pump is where we filled the diesel rabbit in the 80’s, at the time we shopped at a store just over the freeway overpass sp it was on the way. Haven’t bothered with e0 gas for the mowers and no issues. My brothers truck is carburetor but it’s driven maybe enough to use a tank per year.
The boat takes 120gal from empty but I’m fairly sure we’ll use what’s in the tank now and if we feel. the urge, Marina is usually $,50/gal more than in town but we get a fuel tax refund. Usually keep at least 40gal in the tank. Digital gauge tells you how many gallons you’ve used, wh8ch for 16yrs of use has proven accurate
I’m sure you didn’t put gas in a diesel car.
I had a 1972 Airens snowblower ( actually it was sold as a two wheeled tractor with a sno-throw attachment.roto- tiller and mower attachments were available.) I used E10 for years and had no trouble with it ever. It was never in the shop and was still running fine when I sold my house in2023. I always hut off the flow when it was running and then drained the tank into my car and put fresh gas in in October. It was only two bolts and a clamp to remove the tank.
No but same station which is slightly out of our way now, at the time you meedd a charge card from them to buy fuel. Fast Fuel is the brand locally owned station by acme fuel. Extra half mile for E0 compared to fueling at the corner Aarco on the way home.
Must be where Wile E Coyote shops for his rocket skates to catch the Roadrunner
I used e85 in my Taurus once and got cel. Never tried it in my Chrysler t&c. I did use e15 last week. So far, so good.
We had a driver that twice put it in a non flex car. Cost about $2000 each time for repairs. Same guy that came back with a scissor in the side of the van tire so who knows the reality.