Sort of funny....but when I had my little blower explosion and engine fire in Jan, I was scrambling for something to extinguish the flames with....since I was out of water in my drinking bottle. I remembered I had this 3 gallon W/M reservoir in the trunk so I spun the lid off it, dumped a shop towel in it, and threw it on the flames....whoooffff...big blue flame came out as the methanol burned off. I guess -20 washer fluid does burn...for a bit at least. THe methanol burned off pretty quick leaving the water to quench things (thankfully).
"Aspice, officio fungeris sine spe honoris amplioris." (Face it, you're stuck in a dead end job.)