Used oil I just leave behind Wal-Mart, close to the oil tank. Something happens to it, as it is never there when I go back to put more there. The way the wastewater guys talked, a coupla gallons of diluted ethylene glycol in millions of gallons of wastewater was nothing to worry about. It was all treated, they felt it was OK. Now if it were a bigger shop, we would have to go to a collection.