High Oil consumption

[ika]

Hi,
my 2011 5.0i consumes at least 0.5 quarter oil per 600 miles.
I think its to high.
My mechanic guy sad that it could be clogged/carbon build up on piston ring and recommend to use some carbon cleaner for engine.
To spray cleaner in cylinder - removing spark plug and leave half a day, than flush oil.
Any recommendation ???
What cleaner you recommend ???

[fast4d]

get on the throttle hard, often. let boost (twin turbos?) build up get lots of cylinder pressure to seat the rings. use a couple bottles of redline fuel treatment.

all the light throttle, low speed driving is making it worse.

[Davidf]

How many miles? Does the 5.0 suffer from the valve stems seal issue like the 4.8's? My 4.8i has 100k miles and I am just starting to notice a bit of smoke out of the tailpipe. So, it is due for valve stems. Not looking forward to the task at all as I did the repair previously on my 545i and it took about 18 hours total.

My 4.8i is starting to use a bit more oil as well certainly due to the valve stems. I sure hope the 5.0 does not have the same issue as I just purchased a 2012 550i (same engine?). I have not done the research to know the difference yet.

[ika]

I already replaced valve seals. What about sea foam ??

[fast4d]

no mention of oil viscosity?

how about a thicker oil?

[ika]

Originally Posted by fast4d

no mention of oil viscosity?

how about a thicker oil?

Shell helix ultra 4w-40

[ika]

I gonna use sonax engine cleaner:
SONAX Easy off engine cleaner flush :: Products - SONAX - cleaning and polishing like a professional
As I'm told, have to add in oil and let the engine work 10-15min at idle, than replace oil.