The question comes back every now and again so I thought I'd address it.

Can you run a diesel heater on waste oil? Be it raw, filtered, or 50/50 diesel mix.

Part 1 we try to run on straight filtered engine oil.
It does run, but still leaves a residue in the burn chamber.
Still not recommended.

Gas analyser - https://www.tpieurope.com/flue-gas-an...

Afterburner - http://afterburner.mrjones.id.au/pric...