average price per gallon for diesel
in the us the average price of diesel fuel has historically been lower than that of gasoline in october 1998 the national average price of diesel fuel was $ 1 039 per gallon and that of gasoline was $ 1 038 per gallon as of october 6 2008 diesel fuel was priced at $ 3 875 per gallon whereas gasoline was priced at $ 3 484 per gallon