He has a good motorcycle site, too.
I've continued my search for Wal-Mart Syntehtic Oil. I visited the only Super Wal-Mart in Hot Springs, AR (mixed income service, low to high). They had no store branded synthetic or mixed/blend version. Only regular motor oil.

So far, six wal-marts, only one has synthetic, and that's the one in the expensive part of Dallas. Three had the blended oil. So much for all stores being the same.