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I get the oil changed every 7,500 miles. Normally it's still "full" as per the electronic meter. But twice and only twice the level has dropped to near minimum before 7,500 miles. The first time it happened I asked my oil place to check for leaks, they said it was clean as a whistle down there (oil wise) and told me they sometimes see turbo BMW's do this. The second time it happened I had the dealer check it too - they said the same thing.
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