Last of three days nibbling away at a batch of waste oil I got off Facebook marketplace. I really like it when someone has a barrel to give me, even if it’s not full. This batch was an old accumulation of five gallon pails and one gallon/five quart jugs. Five pails and thirty jugs. So I get to empty everything, rinse them with some bad gas someone else gave me, crush them and put them in the dumpster.
Most of the jugs were pretty good, but a couple had real sludge in the bottom. The pails, on the other hand were a trip. One was antifreeze, with a little oil floating on it. One was a solid block of ice, and two of the others had chunks of ice in them. At least in this weather, there was no liquid water.
I wound up with about forty five gallons of useable oil. I’m going to have to clean up the antifreeze and test it. I’ve got a tractor that will use it. The ice will melt some day, and I can float the residual oil off it.

Not on the list of approved fuels.