I worked quite a few hours on a wvo heater. Actually, i planned to use waste motor oil. Mother Earth News has a good place to start. http://www.journeytoforever.org/biofuel ... h/me4.html
but i was unable to get it to work properly. Using the above design, A steady rate of waste oil dripping on to a fire and a little air from a blow dryer makes an intense furnace. It's a cool idea, but prob not the best thing for skoolies.
If i stumble upon a fuel oil furnace for cheap, i'm gonna salvage the fuel delivery system off from it. I think that could easily be converted to burn waste oil.
If not, it would certianly burn diesel fuel.....i'm not sure if there's much difference between diesel and fuel oil if it's being used in a furnace. (don't think fuel oil would make a good motor fuel) Kerosine has been used extensively in diesel engines in countries where road tax makes diesel unafordable. I woulnd't really recomend this here in the US. Especially since kerosine is way more expensive.
Any mechanics out there know what kerosine would do to an engine after a lot of use?? I'll be the first to admit i know nothing about diesel engines (even though i have on in my bus)