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We are getting a few new ethanol refineries here in CO so the number of gas stations selling E85 will be increasing shortly. E85 is the blend of 85% ethanol and 15% gas, right now all gas is at least 10% ethanol in CO.
I know that vehicles must be 'flex fuel' to use E85. But what is needed to support E85 on a C5? The lower price (.40 per gallon) and much higher octane (about 100) are tempting.