Please don't dump it on the ground. It's not going back to from where it came, it'll eventually end up in the groundwater table. If it contaminates your or a neighbor's well you could be in for an expensive bill for cleaning it up. Oil is extracted from below the water table, dumping it on the ground puts it into the water table. Check your State's laws. Many will require that you recycle it and will require car repair facilities to take it. In most (if not all) States it's illegal to dump waste oil on the ground.
