Mobil 1 changed their formula several years ago and lost BMW LL-01 certification at that time.

The simple answer is Castrol Edge 0W-40 available at WM and AMZ for $25 or less for a 5 qt. jug. It's about the only affordable oil that still meets the LL-01 specification as your engine calls for.

There are other LL-01 oils but they tend to be quite a bit more expensive.

AM.

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E70 2010 3.0 M57 AT Titanium Silver with Black Leather
E53 2004 3.0 M54 AT Toledo Blue with Gray Leather
E83 2008 3.0 N52 AT Silver Gray Metallic with Black Vinyl
E46 1999 2.8 M52TU 5MT Black with Tan Leather 250K+ miles (Sold, but not forgotten)