I have a 540 - 2003 BMW - the owners book says change the oil when directed by the computer lights - that's about 30,000 miles - seems an extremely long time between oil changes - I bought the car 5/2004 with 13,000 mi. on it and the oil was changed 5/2004. It's now 5/2005, and I'm still a long way from the second oil change. I do very little stop and go driving - mostly distance driving. Does anyone change oil more often that directed. Thanks - Jenny
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