I'm sure everyone has read posts where Hemi owners attempt to put the beat-down on the Ecodiesel by asserting that "diesel costs 30% more than gas." Back when I towed with gas I towed with mid-grade, so that's my reference. I used the Sirius Travel Link feature to find me some cheap diesel this morning. It told me that the cheapest diesel was only 4 cents more expensive then the cheapest mid-grade gas. That's a delta of less than 1%. As usual tho, the range in diesel prices was ~35cents. It pays to shop around.