Gasoline (87 oct.) is between $1.49 & $1.57 depending on the county. Diesel is around $1.48 and $1.58 usually the county with the cheap gas has expensive diesel, and vice-versa. Premium is around $1.75 ±4¢.
Sounds like in Detroit you get not only beat up by the lousy roads, but now by the price of fuel too!
For me its almost even between my gas and oil burner..my 300 would get a little better mileage than my (other car), but diesel is just a penny or two more in most places.
03/83 300D 184k
07/73 280 160k