Some of them burn cleanly with very little soot or smoke but others don t.
Build a waste oil furnace.
This video shows the build of a gravity fed drip waste oil burner this is the one of the simplest design for maximum heat and flexibility the concept behind this burner is that oil does not burn but the fumes it gives off when the oil is boiling the deeper the pan the harder is it to maintain an efficient boil a cast iron pan maintains the higher temperature the best and does not threaten.
This type basically just drips preheated fuel into a pan or pot where it burns.
This is the simplest and least expensive way to build a waste oil heater but the results vary greatly.
So like many small scale farmers with a full time job young family and a thousand things to do all the time it seems that when you live in a cold climate there is always a ton of time devoted to the gathering of fire wood to heat the house and the.
First is the pot burner or pan and drip valve type.
How to make a waste oil burner.
Fantastic heat output from this easy to build 5 dollar waste oil burner.