2004 BMW 745Li - Oil Consumption

[Princeton Auto]

'04 BMW is using oil. After vehicle has been idling for a short time as if at a stop light. Upon acceleration, blue smoke can be seen. Typically we would suspect valve stem seals, and I have seen this problem with PCV systems as well.

But on this particular vehicle, I am suspicious that it may be something other than an internal component failure. Mileage is 101K...

Any suggestions??

[jbadenoch]

why are you not suspecting internal eng issue or pcv? how much oil is it consuming?

[ricmorin]

How much oil is it using? Any external leaks? Have all the PCV updates been performed? Has the non-return valve campaign been performed? What is the crankcase pressure? Have you checked the pressure control valve?

[Princeton Auto]

Sorry it has taken so long to get back to you on this topic. With all of your suggestions, I am going to refer this vehicle to a shop with more experience on these vehicles. Customer satisfaction is more important than saving face. It's out of our spectrum of expertise.

Thanks for your advice.