I'm in the UK and my dealer was using Castrol.
With BMW now moving over to Shell, my last oil service (N55 engine) had a red stamp on the worksheet, specifying Shell Helix. Not seen the exact spec' being used, but assume it is something like Shell Helix Ultra 0W-30 or 5W-30; as these are to BMW LL-04.
Will be interesting to see if there is any difference in oil consumption. To date consumption negligible.
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