Thanks for the detailed write up. I appreciate it very much. The reason I ask this because I will be using my BMW frequently and I’ll be very busy within October and November time frame. So during that time frame I won’t have time to send it for an oil change at the dealer. In the whole month of December, the car will be in the garage since I’ll be on a vacation. Probably around February or March I’ll bring it for service. Now that you said it, I’m pretty confident driving it without bringing it for service for at least 3- 4 months.