Kawasaki KLR650 - Diesel:
"THE United States Marine Corps, legendary for doing more with less, has used dual-purpose motorcycles for scouting, messenger service, convoy control and military police work.
But the motorcycles sold today for use on-road and off have a big drawback for military service: they use the wrong fuel.
Other American and NATO military machines, from diesel generators to stealth bombers, run on JP-8 to simplify fuel supply logistics. While JP-8, a formulation of jet fuel similar to kerosene and diesel fuel, works fine in those engines, commercially available motorcycles require gasoline."