I've searched around and what not but I'm just curious as to what really is everyone's opinion on the "BEST" motor oil for the vw spec required for Audi and VW? A lot of people say Mobil 1 0w40, GC (which is slowly becoming extinct), castrol 0w40 (haven't found much in this oil), pennzoil 5w40 euro, redline, amsoil, RP, motul, pentosin, liqui/lubro moly, and for fun RT6 as well. let me know what you guys think, if I missed something feel free to let me know. Just wondering what people's opinions are on what's the best. Regardless of price.