[silverado]

I don't think BMW is out to ruin its reputation for building engines that can "run forever" by skimping on oil changes during warranty. It only makes sense that there is A LOT more to this decision to set the oil change interval to 15,000 miles than just saving money and thinking "let them blow their engines after the warranty is over, it's not our problem". That's just too simplistic and can only be done by total morons. Also, remember that the same oil change interval is used in countries where BMW doesn't pay for oil chnages.

These are brand new engines and I have to believe, with everything we know about BMW, that they are engineered with these intervals in mind.