I found this to be interesting.
I was out of town with a friend, and he went to fill up at the local Citgo. The fuel sign looked something like this:
Regular gas - $3.03/gal
Mid grade - $3.13/gal
Premium - $3.23/gal
Diesel - $3.35/gal
Off Road Diesel - $2.98/gal

Surprisingly, I've never heard of the stuff before, nor am I finding much information on it right now. The cashier said it's a heavier grade that will run in any diesel. Does anyone have experience using it and know why it's so much cheaper?
We were in Daytona Beach by the way.