RC51, I'm not sure why it's more expensive.
U.S. refineries produce an average of about 10 gallons of diesel fuel from one barrel (42 gallons) of crude oil.
U.S. refineries produce about 19 gallons of motor gasoline from one barrel (42 gallons) of crude oil.From what I've heard, gasoline takes more refinement steps to produce, so from my thinking, it would be more expensive than diesel to produce.
All gasoline, when produced is unleaded. Remember leaded gas? Tetrahedral lead was added to gasoline to make "leaded gas". When unleaded gas first hit the market, it was priced at more $ per gallon than leaded gas. In my mind, it was strictly a marketing ploy to make more profit, although I could be wrong.
Then you have your state, local and federal taxes per gallon.
http://www.api.org/oil-and-natural-gas-overview/industry-economics/fuel-taxes Here in Indiana, according to that website it is .57/gal for gas, .74/gal for diesel.
