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The rpm's definitely increase from about 750 to about 1100 during the level measurement. The Owner's Manual for the 2012 5er only covers 520 and 528 (duh) for measuring specific level (detailed measurement as they put it), but the manual notes that during detailed measurement, the idle speed is increased somewhat. I think the same message re increased idle speed is given in the iDrive during the measure-oil-level selection process.
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