Diesel fuel is an industrial fuel, which is often ordered far in advance, industries cannot cut back on usage as quickly, which kept diesel prices higher. In addition, growing industrial countries like China and India are putting increasing demand on diesel fuel, and in Europe a large percentage of personal vehicles also run on diesel, further straining supplies. So, while diesel prices have often been significantly lower than gasoline prices, shifts in supply and demand can actually cause either type of fuel to be priced higher than the other.
TV= 2012 F-150 FX4 Supercab
FW= 2011 270ret Crusader
Hitch= Reese Pro Series 16K Hitch