Use the 93 E10. Just don't leave any significant amount of fuel in the tank for more than about 3 weeks.

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Just curious, what would the problem be with 93 with ethanol

if i remember correctly ethanol creates hotter cylinder temps. recall some engine builders having to add 1 or 2 numbers jetting to carbureted blower motors. it was a few years ago so i do not recall the whole deal behind it. but I do remember a lot of black rubber dust from rubber fuel lines.

my personal experience in the automotive field on high line vehicles that ethanol caused issues with there high pressure fuel pumps and causing check engine lights to come on all the time. what we were told is to measure the ethanol content of the fuel and if it was more than 10% that the repair was not covered and the customer would have find fuel with less than 10% ethanol in it. we very rarely found the ethanol content to be less than 10%

Just wondering, we've been running a procharged BBC on E85 in a boat for the last few years without a single problem. The fuel system was designed with ethanol in mind though. We actually see lower EGTs. The motor runs better across the board, it doesn't load up at idle because of the big cam. I don't see why 10% in 93 would be a problem.

I run eth 93 with procharged setup...no issues

I've never bought nonethanol fuel for anything i own. Never had a problem. Id go with the 93 and not think twice.

Yes, same here. I know everyone talks about ethanol as if its the demise of the world, like its the plague, but I have never had any issues because of it. Not in my Fountain, my cars, my lawnmower, snowmobiles, or my pontoon boat.

i know with e85 you can turn the boost up without worry of detonation because the octane rating is around 115 but in illinois you never really know what you are getting when you buy it.i have heard it can be from e60 to e90.how is the consumption,i would think mileage would suffer compared to 10%.

Issues with Ethanol are deterioration of fuel lines and carb problems, proven facts. Here is an article last year from the "SunSentinal" that talks about the adverse effects of Ethanol and problems it has caused

http://articles.sun-sentinel.com/201...ternative-fuel

I personally don't like taking chances and will drive the extra 40-50 miles to find the pure gas and add boost if required. Just my $.02