The special fuel was specially distilled/blended oil. The problem with using it in normal jets is that it is so hard to light that you can't get the engines sta

The special fuel was specially distilled/blended oil. The problem with using it in normal jets is that it is so hard to light that you can't get the engines started without special ignition fluid. This poses the obvious problem for the tankers that you can't get their engines started without special engines, or segregated tanks.