So, in your opinion, the "valve stem seals failure" is hoax, and AGA & the owner are crooks, because of this statement (below vid)?, or they have no idea what they're talking about. Excuse me, but I trust them:

https://www.youtube.com/watch?featur...&v=AE5PsbHgzM4

you got to it first
 

I was just about to post a link to the same video. I watched it again last night and now I'm planning to go take a trip and see their shop. They are close by and really seem to know what's up with BMWs.

I think he(All German Auto) is right, I also think there may be more to this issue than just what I know. I'll show him this thread if I meet him and ask him what his thoughts are.

I actually went to the dealer & different indy shops specialized in BMW's before I tackled the job.
The consensus was that the heavy smoking at idle is either due to failed valve stem seals, or failed valve guides, or both.
I believe that if this was only a sealing issue (VCG & all other related seals & gaskets), ALL these shops would have pointed to that direction, these cars are not new, and by now word would have spread around to change VCG & seals if smoking - not the case. It also seems that in the US (by the on-line research I did), the smoking issue points again to these 2 issues, and I think one will trigger the other if not addressed (valve stem seals start degrading, if not addressed they degrade further and allow the valve stem to be in contact with the guide, wearing it out).

P.S.: they also told me that if I can live with it, if doesn't bother me, and that the repair bill is xxxx $, and that it's cheaper to add oil in the long run....

McDonald D; (I didn't want to quote your post cause we'd be on page 10 in no time) You're really stretching it with the headers, cats, etc. - unless you've sucked down enough oil to plug them.

I guess my main point with the "you're in there anyways" comment was;
- The valve stem seals are what $20-$30 and the AGA tool can be rented or purchased, then resold easily. Wouldn't it suck if you went thru the trouble & expense of replacing your valve cover gaskets only to find out that you needed stem seals afterwards? (I hear valve covers gaskets are a pain on the N62 and you may as well replace your spark plugs while there) Yes, any repair can be up sold to include a large fry or apple pie with your order. (It's your choice)

In my situation, I'm done owning a BMW and can't wait to sell this thing. As soon as I fix my transmission issue and buff the headlights it's going up for sale.
And considering the fallacy inundating these forms as to oil consumption and stem seals, I'm hoping a potential buyer would be eager to purchase mine since the seals have already been replaced with the updated version. (Needed or not)