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
Sport45 wrote:
As far as the gasoline goes, cold gasoline contains more energy per gallon that hot gasoline. This is because of thermal expansion. The energy per unit mass remains essentially constant.
Since you buy gas and diesel by volume (gallons) you are always better off buying in the early morning when the fuel is colder.
At least that used to be the case. Modern pumps may have temperature compensation.
I can't recall seeing a gas station with above ground tanks. Is it really so hot where you live that the gasoline in a tank buried 20' or 30' down goes up that much in temperature?
As for the pumps, I think you will find they are "calibrated" to a set temperature, that of the earth at the depth it's stored at, not "compensated".
