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Yes Mr. P your correct. Sometimes it less at the pump and if you tune your car for 85% it may run lean.



Hear in east Tenn all we can get is E70. The station owners have showen me a Letter from their supplier that states E70 is all they will ever get. To compensate I blend 98% ethanol with it. I add one gallon of 98% ethanol to the E70. This blend brings the mix up to 85% ethanol. I buy the 98% ethanol in 55 gallon drums. I can get 100% ethanol locally but at $10 a quart it gets expensive, besides the stuff I buy by the quart is better stuited for drinking. As far as mixing 110 race fuel with the ethanol you will be making yor engine run even richer if you are tuned for E85. If you end up with an E70 blend, I would jet the engine for E70, so you will need to jet down to keep from being to rich. I tune using an o2 sensor set on a Lambda scale. I tune my engine to be 15 to 20% rich when I reach the strip, so on a lambda scale you want to be between 80 and 85. Hope this helps.



If you can buy E-100 that is drinking alky and is taxed
based on drinking alky... thats why it comes as a max
of E-98 coming out of the ethanol plants(they dont
want to pay the drinking alky taxes)