^^^^ So you put 2 quarts of Stop Leak, a Quart of Oil Stabilizer, and the rest is 5w-20 Supertech oil? Wow.

There is an inherent issue which needs to be addressed and besides being a temporary fix I don't believe its the right one for long term ownership.

I figure since it works perfectly, that adding 25 dollars to each oil change to make it, and me, happy, is a good trade off. Actually, its not really adding 25 dollars now that I think about; probably about 10 or 15 dollars since I'm replacing 3 quarts.

The inherent problem is the valve guide/seal design, and the 164,000 miles on a car that has problem seen alot of 100% throttle.

This is my plug for Lucas; I run it in all my cars now:
2006 X5 4.8
2008 X5 3.0
1994 Ford Lightning
11 sec Eagle Talon AWD
1972 Ford LTD Convertible

Can an oil leak be the core issue also? and the crank case pressure is off due to this leak?

No oil leaks that I'm aware of. Just plain old worn valve seals. The CCV is fine with the occasional cleaning out of the peanut butter. I thought that was the original fix and it didn't do anything for the smoking.

Lovely, lovely- this afternoon I had an extended idle (~15 mins), and when I drove off there was a huge plume of blue smoke. Arrggh, now onto the next never ending headache:D

Any one know of a tech in the Pugent Sound area (Seattle and environs) who does the n62 valve stem seals repair on the side using this technique https://www.youtube.com/watch?v=YacOx2ydMbI ?

'05 4.4 sports 112K miles.

I'm tempted to go for this quick fix but I don't know what the long term effect would be. I intend to keep my X5 'till the end and therefore would like to fix her the right way- at least that's what my good self is telling me;)

I was in that same boat and in January went ahead and got mine fixed. It's stopped using oil and no more smoke! Plus it got a little peppier too!

BTW, sent you a PM with a shop recommendation. :thumbup:

Hello DavidClass, how's everything holding up with your fix?

Curious as well since mine starts to smoke after a 15min idle. I'm not sure I could bring myself to put stop leak in... but you never know. Would save about a grand and 40 hours of time. :dunno: