Results in our Mercury Marquis with the 4.6 liter engine indicate that we burn AT LEAST as much gasoline using the ethanol blend as we did burning pure gasoline because of reduced mileage. So the ethanol portion of the fuel is totally wasted in that car. Sometimes the drop in mileage using “ten percent” ethanol is well over ten percent, sometimes I think it approaches twenty percent.
Your theoretical loss of MPG should be just about 15%, using 10% ethonol vs. pure gasoline.
The forced use of gasahol in the USA is just another huge scam perpetrated on the public by Archer Daniels Midland, environmental whackos and an out-of-control dumbass Congress!
It has been pointed out countless times that use of gasahol does not save either gas or reduce US oil imports.
Maybe one day common sense will prevail and we’ll really force Congress to do the right thing!