We have a lot of engines that require oil changes. Used oil is a resource on a property like this (fire starter, trailer decking preservative, etc.). My solution is a plastic 55-gallon barrel, a barrel pump, a transfer pump, some garden hose, and a 5-gallon bucket that I found on the side of the road. I have about $80 invested in the setup, and that could have been $50 total if the pump I wanted was in stock.