Maybe a fuelish question?

ROBERTSUNRUS wrote:
:) Hi, My Lincoln has to have Premium fuel and used to get 11.5 MPG while towing consistently. Now with Ethanol, it gets 10.0 to 10.5 MPG while towing.

I will have to check mine to see what it actually does between 87 octane 10% ethanol gas and 91 octane straight gas. My 6.8 has 9.21 compression ratio and it seems to have more power on the 91 octane fuel.

Back when ethanol gas first came out regular gas was 87 octane and ethanol gas was 89 octane. In my 1978 El Camino SS 350ci the ethanol gas had more power but it was rated 2 octane points higher.