We are all aware of the "Mayo" problem with BMW engines. More frequent oil change would help to diminish the problem, while longer oil change will exacerbate the problem.

Yes, Mayo problem is widely known. It is also widely known that, assuming the CCV system is not clogged--that would be covered under warranty, the simple solution is take a drive once in a while that is long enough that the engine gets to operating temp for a period of time. I would expect the dealer to advise the owner to do so when the see it during the oil change. I think it is a reach that the dealer would attempt, let alone be successful, deeming mayo condition as a violation of warranty. It's far more likely they would install the cold weather CCV system and advise the preventative measure mentioned above.

Have you heard of a voided warranty due to the mayo issue. I haven't.

Since the CCV is located outside of the engine, taking it for a long drive has very little effect once the problem begins. The heat from the engine to burn off any mayo in the CCV will not occur because the CCV is located away from the engine.

On my PORSCHE I see mayo forming in the oil tank but it has a standard PVC system and I know of no incidences on any of the PORSCHE forums where any members have hydrolock their engines due to mayo. Later PORSCHE have adopted a similar CCV system and there are postings of problem with the system.

Mayo is formed when water vapor mixes with the oil. Water vapor will always be a problem since it is part of the combustion process. Sludge is similar to mayo and Toyota has address this issue in their cars by advising the owners to do more frequent oil changes.

Please explain to me why you own an X5 when you have had all the issues you mention. I am not able to see the logic.

I agree that changing the oil more frequently will help remove condensation if it has not been 'burned' off by driving. I also agree that it won't help clear up the CCV if it has already become a problem. That is not the primary topic of this exchange.

The topic of this exchange was the implication there is a hidden agenda in the warranty to contribute to the goal of planned obsolescence. The mayo problem was listed as endorsement and as an example how BMW uses disclaimers to void the warranty repair if the mayo problem occurs.

I don't agree there is anything in BMW objectives that even smells of planned obsolescence.

I don't agree that a warranty disclaimer will be used to void the warranty if the mayo condition happens as long as the oil is changed within the 15,000 mile parameter of the warranty.

I think it a stretch to say the disclaimer highlighted considers the cause of the mayo problem to be harsh conditions. Even if BMW considers it applicable, as long as all warranty service is done by BMW they are responsible for adjusting service parameters for harsh conditions. I agree the owner could be charged for the oil change. I have never heard of that, have you or anyone else here? I would expect lots of noise about it if that were the case.

Water vapor is an issue rather than a problem. Some mfgs addressed the issue better than others so it didn't become a problem. You may, but I don't, have documentation where BMW fell in a 1-10 range with the E53 engines.

In most of this I read conjecture. You may be absolutely correct but just saying it is true doesn't make it so.

As a side note--why is Porsche in all caps?

That is the branding for PORSCHE.

http://4.bp.blogspot.com/_9NA3eH4VZz...BLogo%2B02.jpg

Some time I refer to our car as BMUU (Because most Americans pronounce it B M double U) and not B M Vay as it is pronounced in Germany.

And Germans pronounce "AMG" as "I am gay".

Detail, but, what you pictured is the brand logo. It is registered with a definitive description of color, typeface, sizes, etc. The Porsche brand logo includes the crest. The brand name is Porsche and it is not necessary to type it in all caps to be correct.