Replying to myself here... The MSDS I found shows a basic pH and Potassium Hydroxide as an ingredient.

This should be excellent for grease fires. H20+KOH+hot oil=Soap

I worked a summer internship for a fire protection company doing R&D and UL qualifications of wet chemical systems for commercial kitchens. Unlike dry chem, the aqueous solution helps cool the oil by evaporation and forms a soap layer the floats on the surface of the oil.

Once, when the system under test failed, I manually put out a 36" wok filled to the brim with 600 degree flaming oil with a 2-1/2 gal "A" type extinguisher that was charged with this solution.

************ DO NOT USE PLAIN WATER ON A GREASE FIRE *****************