But the 93 octanes available from several different oil companies that I know of have zero or very little ethanol so it's pure petroleum. Dave, you're saying that the 87 octane has no ethanol? Why would the cheapest fuels available with the lowest octane have no ethanol. Don't make no sense to me!
By law all fuel, 93 or not, has ethanol in many parts of the country (see map). RFG = reformulated gasoline and that is ethanol is in the fuel to improve air quaility.
What dave said is what I've seen in parts of the country as well, the 89 with ethanol is often the least expensive in parts of the midwest.
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