Anyone run the German Castrol 0W-30 in their 3800 Series II ? The fanatics over at BITOG treat the stuff like it'* a religion. Lately I've been running Chevron 10W-30 in my LeSabre, and it Loves the stuff. I would spring for the GC 0W-30 only if I knew for sure it would work well in a 3800 Series II. Your opinions please.