I have a 2015 BMW M4 with the S55 twin turbo 3.0L inline-six which I believe should perform well with the same type of oils that the previous N54 and N55 engines used. One difference is that my engine makes ~500HP (modified) so it will live a harder life compared to a stock 300HP N54. FWIW and IIRC, back in circa 2008 BMW approved 0W40 and 5W40 for the N54. When the new M3 / M4 appeared in 2014 BMW approved 0W30, 5W30 and 0W40 LL-01 oils but more recently they moved to one oil, the BMW Genuine Twinpower Turbo Engine Oil Ll-01 Fe 0W30. IMO this move was to simplify the lives of BMW dealer service & parts depts and to assist with BMW's CAFE ratings, not to help the S55 engine live a longer life during spirited use! My search is for a robust oil to use during warm months on the street and track with 5k OCIs. The 0W cold start spec is less important to me but I want an oil with a decent HTHS that won't shear out of grade and since the S55 is a direct injection Turbo engine I believe that a low Noack % would be desirable to reduce carbon deposits. I assume none of the oils that meet my requirements will also be LL-01 Fe approved but I am fine rolling the dice with an LL-01 spec or even an oil that isn't BMW approved. Here are a few that caught my attention. Motul 8100 X-Cess 5W40 Motul 300V 5W30 or 5W40 Mobil 1 0W40 aka the Porsche oil Castrol Edge Titanium 5W40 Redline 5W30 or 5W40 Any recommendations would be appreciated.