Anybody have a waste oil furnace? Home made?

I have not kept up on "whut's out there." Some 15 years ago, I worked HVAC/R so I know and understand home and light commercial gun type oil burners.

Having said that, a number of years BEFORE I knew anything about oil systems, a different outfit I worked for had a low pressure (air aspirated) waste oil burner that was, quite simply, a huge, giant, PITA.

You have to have some way to REALLY FILTER your oil, it would help if you have a STABLE type of oil, IE nothing but ATF, nothing but motor oil, etc.

Back then, we fed all kinds of "sludge" through that thing, and it was a constant bother.

What I'm trying to say is, like a friend of mine who runs an auto trans shop, or an oil change shop that has a lot of motor oil, or unless you have some other fairly CLEAN form of fuel, ...................

Personally, most of the homebrew ones I've seen on the www look pretty flakey to me.