Clean Burn Waste Oil In A Diesel Heater ?

To say that this heater is modified, is a bit of an understatement... but, at this particular point in time... It is running on waste oil (75% oil / 20% diesel / 5% gasoline) The burn chamber has several mods, the fuel is being injected in mixed with air and the inlet air is running through a bubbles. More on all of these mods in a future, full length UA-cam video.