Let GT inform me, as I honestly do not know. What's wrong with pouring motor oil into the ground after changing vehicle oil? While I have never done it (I always take my containers to the local auto shop for disposal), everyone else did when I was a little kid. My dad, my uncles, my grandfathers, they all just dug a little hole and poured the used motor oil right in. These guys were also outdoorsman / conservationist types. It was the norm. Some people I still know today dump their oil into their own yard. So, I ask.....what is the potential consequence (beyond legal) for doing such?