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.
1999 Ford Taurus 145k (Vulcan v6) - M1 High Mileage 5w30 | Fram Ultra XG 3600
2002 Buick Century 102k - PU 5w30 / Fram Ultra XG 3980 / Filter mag