We record the burning time in practice and measure the remaining ash
For the experiment, pour 1 liter of waste into the tray.
For the purity of the tests, we ignite with gasoline, since it does not produce additional ash.
The ignited waste burns without soot. Almost steam comes out of the chimney, so there is no soot from it.
Bottom line
According to test results, 1 liter of waste oil in a modified wood-burning stove with an attached burner burns out in 48 minutes.
This is faster than with drip fuel supply, but a large amount of heat is immediately released. Considering the low cost of mining, using such a furnace is still profitable. There is no more than a teaspoon of ash left in the burner tray when finished, so cleaning it takes seconds.