Antifreeze is very FLAMABLE. DO NOT HEAT OVER FLAME OR ELECTRIC STOVE. The vapors go down and if you are lucky enough to put out the flame on top you will find the inside of the stove on fire. My parts were clean including a Bisson muffler but the stove was ruined. If it hadent been for a large co2 extinguisher handy the house would have burned down. I set the heat low but it got to a simmer and ignited putting out a loud roar which got my attention just in time.
Ray