Byzantine Weapons and Warfare

[HHornblower]

There IS a line in the "Alexiad" describing resin from trees being used, am currently searching for it. I'm mostly worried about the viscosity of an oil/tar combination which might be so high that it cannot be ejected or projected far enough by means of a pump-syphon. It would stick together on water though.
As far as those oil resevoirs are concerned, weren't they most common around the fertile cresent and modern day azerbeidjan? That would mean that the Arabs would have access to those resources, and because they created their own "brand" of liquid fire as a countermeasure, i'm inclined to dismiss this mixture to be of Arab design. (They used Nafta, the oil you are referring to as "grenades" in pots, a far more effective way to deliver such a viscosious fluid.)

Thank you for your help!
Good night for now,

Kind regards,

HHornblower

Hans Nielsen