Engine "Hot tank" question

It takes something bigger than a 55 gallon drum too, but you can reclaim the stuff off the top and slowly dispose to sanitary sewer (it will degrease the municipal sewer nicely, about a quart every three days, the solution for pollution is dilution) and mix the sludge with bentonite clay and bag it up in your trash for the landfill. You didn’t hear it from me, though, lolol!