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I was talking to my M tech this morning here in Australia and he was saying that BMW are developing a new electric pre-pump for getting the oil to the Vanos at startup. This should be complete in a couple of months or so at his guess. They also now have listed the parts for a Vanos rebuild but are recommending waiting for the new electric pre-pump.

This should kill off the "diesel" at startup!!

Cheers
Andrew E
 

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BTW I also questioned him on the oil usage - mine has steadied out now to very low oil consumption (I've done 40,000km) and he was saying that all of the M5's they deal with have also settled down after 10,000-20,000km of usage (we've had the M5 over here in Aus for a year now).

So if you are going through a bit of oil at the moment, take heart - it definately does get better!!

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Andrew E
 

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Tell me more about this diesel sound at start up. does your car do it. does it only happen at start up ???
 
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