Dallas and HK - I understand they re-refine the oil. If they are re-refining ONLY used oil, I would be all over it. It would be better than refining crude. But nobody enforces what goes into the receptacles. Multiple viscosities are in used oil, how do they make it 5W-30, 5W-20, etc. How do all the other fluids, chemicals, and other unthinkable substances get removed? How can they be 100% sure they have removed everything? And you are correct, Ashland is a blender. So who is re-refining their used oil? I guess I am skeptical...