Ps-s-s-s-t Castrol guys...if you are peeking in...close your eyes and repeat after me, "We must bring Castrol Edge 0W-40 or Castrol RS 0W-40 (new formula) to the US...we Must...we MUst...we MUST!" There, now, that wasn't hard, was it? Oh, and thanks!
Castrol Formula RS is already widely distributed in the USA as BMW Synthetic 0w-40. I nudge people into using it when I can, and I actually have a 1.8t driver whom I'll pay for his UOA when he gets up to 8000-9000 miles as per our agreement.