[19bonestock88]

In theory, couldn’t a high compression engine(11:1 vs 9.5:1) with advanced timing about match the mileage of a it’s lower performance counterpart running E10-87octane? Seems as if since the ethanol cools the burn and resists detonation really well(some say even better than an octane equivalent gasoline, like E47 vs 100octane), lean burn could help even more?