Originally Posted by JAJ
Despite all the rhetoric, I think the oil CBS system still only monitors fuel consumption between oil changes, just like it always has.
This is pretty much the case. There have been guys on the E90 side who sent their oil at a different intervals. and it starts to break down around 8,000 miles but is still good for most. At 10,000 miles or so, the oil starts to get a little nasty with a lot of wear metals per Blackstone reports but the senor still say's 15,000 miles for an oil change.