I've been getting rid of all of the waste oil and chemicals my father left behind, getting ready to sell the place.I was left with two 55 gallon drums with used motor oil when tenant vacated… at a gallon per week it’s taking a very long time to get rid of…
The best burn barrels I saw were old stainless steel… my guess they might be archeologist find some day?
Old engine oil is easy; a lot of garages accept it for their waste oil furnaces.
Probably those are also outlawed in your state.