What ammo does a flamethrower use?

[Witigis]

On the subject of the original question:
I could give you the liters of flammable oil for several types of WWII flamethrowers...
On the subject of reloading I have found an interesting fact about Japanes flamethrowers of the war: They used compressed air for projecting the liquid and distributed a small air compressor (separately packed in a wooden crate) to the troops for this reason. The types of flamethrowers used in that way were type 93 and 100, the air compressor was type 99. Maybe this is of some help. The Facts come from a book in German language, but was written by Chris Bishop (something like Weapons of World War II).