I suppose this was in a Texas Wallmart. People in the southern states don't trust the 0w, and don't really need it. It doesn't sell well, and in the end I suppose gets closed out, but if you do your research here it is good oil.
That's how I goet a bunch of it. A local auto parts store was closing, and when the discount was high it was the only oil left on the shelf. I took all that was left. It's a bit volatile, so you may have to add some after a while.