https://www.youtube.com/watch?v=OdkF49OGN-Y Looks clear enough to me. We use waste JP-8 drained out of vehicles at work. We sometimes have to clean the fuel lines and metering device but these heaters are extremely simple to work on.
Most of your diesel / kerosene jet flame type heaters should run just fine so long as it's filtered and blended with diesel or kerosene. Not sure how much smoke it might put off but if you do try it I'd be curious to know.
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