I think the dealer would say to follow what the on-board computer says when you need the next oil change.
But, I did mine at 5K miles.
I've seen others on this board do it at 3K miles and some at 7500, etc.. etc...
Service interval is 15k, way too long for my taste. Because of the Synthetic Oil, most BMW mechanics around here recommend 7500k, anything less is a waste of money. I planned on doing mine at 5k & 10k, and let the dealership do there scheduled 15k. And since the oil fuller cap says "Castrol" on it. I found Castrol Full Synthetic at ( now dont laugh, Guy's ) Wally World (aka Wal-Mart) it's only priced at $18.88 for a 5qt container or (Imperial gallon). That's $3.77 a quart, can't beat that price. :thumbup:
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