If I fill my truck up with non-ethanol fuel..

That's actually within the E85 specification, 51-85%.

 

You shouldn't see any difference in power since you're using the same octane and the computer adjusts all those driveability factors to balance with the amount of incoming air.
But the science says you should get better fuel economy with E0. Octane and energy content are not the same thing.
YMMV LOL

 

I switched to non ethanol when my truck started idling really rough one day just to rule it out since these trucks aren’t new enough for ethanol like most of your yard equipment needs non ethanol. Well my 08 isn’t. Anyway noticed it idled better and my fuel mileage was more consistent. My issue has actually turned out to be the fuel pump being clogged and needing the urd upgrade but I’ve been putting that off

 

Ethanol is a Multi-Billion dollar a year subsidized industry.
Even the major environmental group that first pushed it, has come out and said that they were wrong.
It hurts mileage. It's production creates more pollution than it saves.
Let alone the damage it does to vehicles not built for it.

 

I only use Non-Ethanol in my chain saw, weed-eater and lawnmowers. I'm not gonna pay the extra $.75 - $1.00 a gallon to run it in my FJ.

Besides, I have to run Premium anyway...

 

When you tune based on 80-85% ethanol that creates a lot of problems. Now engine management systems (aftermarket) have sensors for ethanol detection, but 8-10 years ago it was VERY rare to find that. Either way, I don't trust the amount of ethanol in most of them. Would E10 cause issues later on down the line? Probably not. But it's a personal choice and I choose not too run it when it' s available.

Another interesting note. My wife's 2012 Ford Fusion gets about 2-3 mpg better on road trips with non-ethanol fuels. Noticed this by accident on road trips. E10 gets about 430 miles to a tank and non-ethanol gets around 470-480 miles to a tank. I know there are many variables, but these are roads we have traveled many times in that vehicle.

 

I tried a number of tanks of non-ethanol in my '15 Tacoma 4.0L. Didn't think it would help and it didn't.

Many of us have put 100s of 1000s of miles on vehicles running corn gas and in my case, they all ran very good.

Corn ain't going away just yet, but when it does, you'll be looking for one of those charging stations.

 

Non ethanol isn't readily available locally and expensive where it it. Last October on a road trip I stopped at a gas station in Tupelo Mississippi where all grades of gas were stupid cheap compared to anywhere else on the trip. The non-ethanol was priced at about the same price as I'd been paying for E15 so I decided to try a tank. That was the worst fuel mileage of the nearly 5000 mile round trip. Maybe just a coincidence, but I wouldn't expect to see any improvement in fuel mileage. There MIGHT be a small boost in power that could be helpful if towing. But I didn't notice any difference.