Supertech dex 6 is an every day value. Just as good as any name brand. Pretty much all the same if it's licensed using the name, some small differences in base oils but all semi synthetic + iirc.
2002 Buick Century 111k - QS Defy 5w30/Fram TG 3387A
Filter mag/Cooper CS5 GT/Wearever Platinum Ceramics
Triple Edge 4T65E/Maxlife Dex-Merc