Living in The Midwest, it's virtually impossible to find gasoline without 10% ethanol. I've run it in every car from I've owned with no issue.

On the other hand I buy 5 gallons of 101 unleaded racing fuel (zero ethanol) to run my lawnmower every Spring.

Feff

 

 

Can't find any ethanol-free 93 octane around me either, but a Maverik near me has 85 octane ethanol-free. Every third half-fill-up or so I get some of that clear 85 octane and add some 105 octane, also ethanol-free. Damn, that stuff is pricey.
All that may not do any good, but oh well, it's what I do.
I use the "Clear" 85 in all my yard implements.
I live at 5000 feet altitude; 85 octane is "Regular", then 88 and 91 is "Premium".
Not my fault.
I have a Honda Magna that got all four carbs gummed up over winter a few years ago. Dude said it was full of ethanol goop. Happens all the time around here, I guess.

 

Also from ON with an XK parked for the duration... I would *** u me most of us run the beasts on premium, and my understanding is that the majority here are ethanol free. The problems with ethanol seem to come mainly from sitting (picks up too much water?) and explains the concern re boats, especially with the big built in tanks. I end the summer with premium in the mowers etc., and still add stabiliser to everything that gets parked. Our daily vehicle has run regular with ethanol for 10yrs with no problem.
Ethanol above that "magic" 10% is said to require the use of some different materials in the fuel system..
Seems sad to use a food product to add to fuel when it is not really required, who is responsible for that? I'm surprised that it is so prevalent in Europe, and then it reduces mileage as well...
That's my rant for today

 

Not a bit....

 

That's where a little extra effort needs to be done. Ethanol has maybe 60-90 day life before it starts to get gummy. That's a problem for small engines and some fuel lines. So the prep for stopping this is additives like sea foam or stabil. I haven't seen to much of a problem with E10 in late model engines . I never had an issue with my 4 weber's on the Ferrari and that car sat for 4 months in winter storage. Had full tank and sea foam mix.