silverbackexpo
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Hey guys I'm back. I was wondering wat I would have to change on bruttus to run e85.
e85
- Thread starter silverbackexpo
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rexster314
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FWIW, we were on a small trip last week, and filled up with E85 in my 2012 KR. After driving around all week, I noticed the overall mpg dropped about 4 mpg. When we came back home I filled up again with E85. I averaged 13.7mpg, when I was getting 17-18 mpg on regular gas. The first tank was 3.09/gal. The second tank of ethanol was 2.99/gal. Regular was going for 3.25 or so. Cheaper yes, I don't think 20 cents a gallon difference is much when the mpg drops so much. It did run very well however.
FordandPolaris
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Yeah I have always heard that people tend to lose mpg's running E85. I have also read that you can run E85 in non-flex fuel vehicles as long as it isn't cold outside. But that is only testimony I have read on other forums. Some guys mix E85 with regular gasoline and run non-flex's on that, but honestly I wouldn't chance it. Run the fuel the engine was designed to run on, just my 2 cents.
rexster314
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Ethanol and most of the older car's seals and gaskets in the fuel system don't get along to well. It will attack them and dry or rot them out pretty quickly
OP
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silverbackexpo
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Ok thanks for the info.
Stoich of E85 is about 9.76 to 1 vs 14.7 to 1 for straight gasoline. Thats why the drop in milage. Due to E85s much higher resistance to detonation you can run much more timing and make more power with it. This is very beneficial if you have boost.
It also runs cooler.
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