So is your thinking the ethanol is helping or the higher octane from the ethanol is helping?
Since E85 can be as low as E51 and still be called E85 it is real hard to get a precise octane rating.
Then we factor in that most quote E85 as having a octane rating of 105 to 115. Some say that is wrong.
So if we assumed your E85 was really 85% ethanol and took the octane rating of 95 we would have.
89 x 4.5 = 400.5 95 x .5 = 47.5 47.5 = 400.5 = 448 448 / 5 = 89.6 So your new octane rating is 89.6
I do not think you will have a problem with to high of a octane. Higher ethanol content eating the fuel system from the inside out might be a different story if you keep pumping the ethanol to it in greater quantities.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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