I found out some information about Walmart's Supertech Synthetic. I emailed Warren Performance Packaging and received a reply stating their MAG 1 synthetic is the exact same oil as the Supertech Synthetic. They said they produce and package the oil for both brands. Just look at the bottom of the bottle and watch for a WPP stamp in the plastic. If this stamp is there, Warren Performance Packaging produced and packaged it. They also state it is a Group III oil. If the WPP is not stamped on the bottom, then your guess is as good as mine as to who produced it. I know they produce it for the Oklahoma area.