E39 525 burning lots of oil

[claude]

Have this car few 6 now and absolutely love it and is one of the best cars i have owned, since the last 2 months the oil consumption is really bothering me
it seems to be getting worse, the engine was very well maintained and the ccv was done maybe less than 2 years ago so im not if its the problem thus time or not, there definitely is no leaks from what I can see, it seem to be burning 1 litre or more every few hundred miles which i dont think is excessive, i always use castrol and never cheap oil and am using 5w30 fully synthetic, before i do the ccv again is there anything that is a common issue that i can look for ?

[Dave]

If it's not the CCV, I would be concerned about valve stem seals. Have you considered switching to a different oil.

I know it's ten steps ahead but valdas is breaking a low mileage 530i auto, I think that engine had less than 100k on it.

[JohnH]

Did you see this thread Claudio?
http://www.bmwhaus.ie/forum/showthread.php?tid=6578

[claude]

seen that John and its something i will consider doing, im just wondering if there was something else that may be the issue, it definitely cant be drinking that much oil at the moment

[JohnH]

How long ago as the rocker cover gasket or oil filter housing gasket. Any chance it's one of them?

[rebel.ranter]

Rocker cover & oil fully gasket OK but Try a different grade of oil 10W40 or another option is Vanis seals (not done).

http://www.bmw-driver.net/forum/archive/index.php/t-36322.html