You can thank the tree huger environmental nazi's for diesel fuel being threw the roof and cost more per gallon then gas. It's been within the last 10 years or so that diesel has sky rocketed, mainly in part that it is now refined more at the refinery. Years ago diesel was one of the cruder forms of fuel you could get and hardy anything was done to it to purify it. Today the tree hugers bitched and moaned about polluting the air and diesel had to be cleaned up alot more. The ULSD Ultra Low Sulfer Diesel is the reason why its so high. The refinery has to take out alot of sulfer in the diesel these days.