What kind of oil does a 2001 Catera take?
Wal-Mart "SuperTech is simply Valvoline (Look at the similarities in the bottles/jugs!).You were misinformed. SuperTech is not made from recycled oil.
Even if it were, that wouldn't be a bad thing. Used oil isn't just poured through a strainer, and sold as recycled. It's totally re-refined into a group II base stock, just as good (and some would argue better) as virgin group II. Additives are added, and you end up with perfectly good engine oil.
Recycles is not inferior, several oil brands offer a recycled line, including Valvoline.