[Wolf 335]

Take it to Mr. Lube.

Heard those guys do a really good job there, they'll even change your wiper blades and you don't even have to get out of the car. A bunch of young fellas that really care and have done many bmw's.

If that's not service I don't know what is.

[paulccliu]

Oil change is very simple. DIY is more easier.
oil quality is not serious concern, most importance is frequency. Change oil within 10000km max.
I recommend Motul 8800 5w-40 which is more expensive but castrol 5w-40 is good if you change it within 10000km.
Walmart sell $45/5l is the cheapest. For Motul you can try Germanparts.

[Corbeau]

I've had a KTM where the OE recommended oil was Motul. We joked on the adventure motorcycling boards that that oil was made from virgin unicorn tears...

[e90-328i]

Very different views on oil.
Either they are looking for the cheapest oil change in a 50k (and up) vehicle.
Or buying the most expensive, equating cause it cost more it is better even if not right type.
I would tend to think that the manufacture would know the best oil. They did design it? (I will tend to not agree with the long interval-as I think that gets into government interference like ethanol)
In the end it is your car and you can use whatever you like. -even French fry oil!-lol
Just remember the piston goes up and down 100 times a second while your driving down the 401 and over 200 times a second when showing off