Frequency of oil change?

Look in your Glove Box and find your Owners Manual for your car. Look in Index for "Maintenance Schedule". You will find it there. If not, call the BMW Dealership or local Auto Parts Store like Kragen, Checker, Pep Boys, etc,,,. Personally, though , unless I have been driving a lot of freeway miles at high speed, I usually change mine about every 7,500 miles on all my vehicles.

Synthetic oil every 5,000 to 6,000 miles.