Without knowing exactly what this oil is, I can tell you from my days in the fuel distribution business that there were some soy based hydraulic oils that were not food grade. Back in the early to mid 2000's there were a couple of brands of industrial hydraulic oils that used soy as the main feed stock. Primary market for this was maritime construction companies and others who worked around bodies of water. Used in dredge pumps and the like. Premise is if they had a leak or spill while operating over water that contamination was at a minimum and degradation began very rapidly when exposed to sunlight and moisture. One brand also offered a chain/cable lube, rail oil for the track oilers on locomotives. Don't remember who made it, seems like it was a specialty company that was riding the soy bandwagon at the time. We had a couple of jugs in the co-op we had to sell. One day we opened a jug up to look at it. True to the word, it looked and felt like hydraulic oil versus cooking oil. My opinion is that if you have this and want to burn it in the deuce, treat it as a mineral oil or wvo for fuel. Don't try to make biodiesel out of it because there are all sorts of additives and detergents in hydraulic oil that you might get some unwanted chemical reactions from it when blending the lye, alcohol, and other goodies to your soy oil.
