[thackney]

“diesel is more expensive per gallon, because it contains more energy per gallon”

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Yea, right.

Not.

1 gallon of diesel fuel = 139,000 Btu

1 gallon of gasoline = 124,000 Btu

USING BRITISH THERMAL UNITS (BTU) TO COMPARE ENERGY
http://www.eia.doe.gov/kids/energyfacts/science/energy_calculator.html#unitsexplained

Also in the last couple years, the EPA has mandated additional diesel processing to reduce the Sulfur Content down to below 15 ppm. This required greater processing and expense at the refineries.

National Clean Diesel Campaign
http://www.epa.gov/cleandiesel/

[taxed2death]

I can understand that the “cleaner” diesel costs more to refine...that makes sense... but the simple fact that it contains more energy, hence should cost more is fishy....

As I mentioned....4-5 years ago it was still making the same energy....right? So why was it almost a buck a gallon cheaper than regular gasoline?

Seems like the second half of your explanation makes much more sense then the first half.