I liked MD's oil comment as well.

But if you do want to buy the BMW-spec oil, at less-than-dealer prices, go to Lordco and get Castrol Syntec. They have several types; one is a blend (cheap), one is a full synthetic (better), and one is a full synthetic with the BMW endorsement (ie BMW additive spec). That is the one they sell to BMW. There is no requirement to use it, there are lots of good oils, but it is the same oil the dealer sells at a lower price, if that matters.

MD: LOL, another too-frequent traveller, since you are speaking in airport codes. In my non-airline business we also use them as shorthand, but I'd venture that not all do. I just go through YYZ from YVR on the way to SCL and EZE, myself, I manage to avoid it for all other routes.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue