Please check out the fourth paragraph in the attached PDF of
this thread regarding CBS intervals:
Quote:
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BMW vehicles' CBS computes the actual optimum maintenance requirements based not only upon the accumulated mileage, but also taking into account important factors pertaining to fuel consumption such as high or low engine speeds, short or long-trip driving. Such computations can result in variations from the 10,000 mile interval and correspondingly, when an engine oil service will actually display "Recommended" or "Due."
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So.... you were saying??