While the vast majority of the well-known White M3A1 Scout Cars produced were powered by Hercules JXD gasoline engines, there were also a few lesser-known variants with different powerplants. These vehicles were powered by a variety of Diesel engines. Diesel engines — their name taken from that of their inventor — Rudolf Diesel — do not have an electrical ignition system, a potential source for radio interference, and are notable for their high torque ratings.
But more importantly, the flashpoint, or lowest temperature needed to evaporate enough fuel for combustion, of gasoline is -45 degrees Fahrenheit, while the flashpoint of Diesel is 100 degrees Fahrenheit. Add to this the high vapor density (3-4) of gasoline, compared to >1 for Diesel, which causes gasoline vapors to
