[j3o3t3]

My 550i now with 115K miles on the clock is consuming 2qts oil approximately every 1000 miles. This consumption rate increased from little if no consumption between 7500K mile oil changes , to this level,over the past 30K miles

MY SA shrugs and indicates these N63's do consume a lot of oil as they rack up miles , however I'm concerned that at this level it's not going to get better, and in fact may be an ominous precursor to a significant engine event .

Car is otherwise nearly perfect ( after multiple injector , turbos, cooling pumps- you name it , it's been replaced ) and correctly maintained by the book . The customer care recall was done @ 80K miles.

What's the boards experience with these engines and the consumption issue as they move past 120K miles .?

[DriveTrainMalfunc]

This video made me feel a little bit better about oil consumption. I am 75k I burn more oil then you do.

[S1ammin]

Entertaining and enlightening :-)

[ezaircon4jc]

But doesn't that "burned" oil in the exhaust destroy the catalytic converter? I would think needing a new cat far outweighs any fuel savings!

[j3o3t3]

Originally Posted by DriveTrainMalfunc

This video made me feel a little bit better about oil consumption. I am 75k I burn more oil then you do.

Originally Posted by DriveTrainMalfunc

This video made me feel a little bit better about oil consumption. I am 75k I burn more oil then you do.

Doesn't make me feel any better.... anyone else ?

[DriveTrainMalfunc]

Originally Posted by j3o3t3

Doesn't make me feel any better.... anyone else ?

I read somewhere that BMW purposely designed the valve seals to let oil pass. But I'm not sure its true nor have I determined a valid enough purpose for that. They did however improve on the designed but I'm starting to hear from BMW techs that the n63tu is still starting to burn a bit of oil. Inspect for oil leaks. But its pretty natural for a lot of 550s to burn a quart of oil in between oil changes

[Kyngofpop]

Originally Posted by j3o3t3

Doesn't make me feel any better.... anyone else ?

Not in the least...

[exred]

Let your car idle for 15-20 minutes, then floor the gas pedal and see if there is a blue smoke from exhaust, if there is a smoke from exhaust you need valve seals replacement.