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South Texas | E85 is usually .10 cheaper than 87 octane here. Obviously not worth running. Really only useful for race car fuel. My mustang requires 93 octane gas, but actually runs better on a blend of 2/3s 87 and 1/3 e85. So I can save $15 on that little tank of gas. Then you get into people who take performance more seriously, with forced induction, and that 51-85% bs actually matters. So people will run a street tune assuming they get the low octane e51, and actually buy real e85 in barrels for track use.
Edited by eight 3/31/2026 08:25
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Who came up with the ethanol blend names?
