Using ethanol free gas.
I have a 2014 Ram 3500 w/ 6.4 Hemi. I have been using the pure gas which is 100% ethanol Free. While it more $$ I get around 4MPG in the city and about 6 MPG on the highway, your mileage may vary. ...
Forum Discussion
I have a hard time believing these huge fuel economy hits from the ethanol additive. Wish it wasn't there, feel it does have slight fuel economy hit. I think what is posted above is extreme worst case scenarios. Would like to test but availability is issue. Also my gut reaction is the economy I'm getting is in line with the machinery involved.
What I do think is a common and large impact on fuel economy which isn't often mentioned is air density issues. Between elevation and warm summer temperatures the air resistance can be more than 25 percent lighter than cold dense air at sea level. On a non aerodynamic RV this can be a big deal. For info look at aircraft density altitude charts.
What I do think is a common and large impact on fuel economy which isn't often mentioned is air density issues. Between elevation and warm summer temperatures the air resistance can be more than 25 percent lighter than cold dense air at sea level. On a non aerodynamic RV this can be a big deal. For info look at aircraft density altitude charts.
