Porsche engine parts failure on Mobil 1 0w-40

[Audi Junkie]

People have been asking for examples of M1 not working in apps where it meets spec. I stumbled on this and thought I'd share...

http://www.lnengineering.com/oil.html#m96

Shown below are two examples of non-catastrophic wear, discovered in two M96 engines at time of disassembly, caused by long drain intervals and use of motor oils not necessarily formulated with the best wear performance in mind. Like mentioned earlier, the factory recommended drain intervals may be too long and recommended "approved" oils may be best for your engine:

cam sprocket wear, 2.5 Boxster M96 engine, using Mobil 1 0w40 at factory recommended drain intervals, ~35,000 mi.

cam chain tensioner pad, 2.5 Boxster M96 engine, using Mobil 1 0w40 at factory recommended drain intervals, ~75,000 mi.

 

[silverrat]

Those engines have enough problems even without lubrication related problems.

 

[Bumpside 427]

Originally Posted By: silverrat
Those engines have enough problems even without lubrication related problems.


Yeah, if it were a Lexus or Infiniti, I'd worry. Not so much with a Porsche.

 

[Gary Allan]

This is obviously a metallurgy issue.

 

[hardcore302]

I'm sorry, but what are the recommended intervals? I've had a few beers, did I see that correctly?

 

[chet2]

35k and 75k ocis?...and that is M1s fault?

 

[Gary Allan]

Developed in concert with the OEM ..hand in hand. How do you think that they get all those FF and OEM approvals? They write them.

35k I can believe if it's kilometers. 75k I can't believe at all.

 

[tonycarguy]

Folks, the Porsche OCI is 15k miles, not 35k or 75k. That was just when the part was pulled

 

[Gary Allan]

If they had used SSO it could have been 35k

Then it would have been only one OCI before they discovered the metallurgy issue(s).

 

[The Critic]

Gosh darn it! Those quick lubes were right! Every 3,000 miles is the way to go!


Those failures appear to be defect-related, but I am sure someone such as Kestas is in a better position to comment given his background in metallurgy.

 

[Mokanic]

Looks like boundary lubrication failed miserably.

 

[Hounds]

Originally Posted By: silverrat
Those engines have enough problems even without lubrication related problems.

Originally Posted By: Gary Allan
This is obviously a metallurgy issue.

 

[HangerHarley]

Originally Posted By: The Critic
Gosh darn it! Those quick lubes were right! Every 3,000 miles is the way to go!


Those failures appear to be defect-related, but I am sure someone such as Kestas is in a better position to comment given his background in metallurgy.


If I may, and i know it is a touchy subject..

A Porsche defect is not all that uncommon.

As for the Oil-related issue, people really do seem to be saying more and more that Porsches hate M1. No personal knowledge, but more than two people have said this, including one quoting a Porsche Master Mechanic (he must be very busy and well paid with all the failed Porsches out there.)

If i were to buy a Porsche, it would be a 944. Then i would check with BITOG for Oil recommendation. In that order.

Now THATS a Porsche.

Back on Topic about Porsches and M1. About 6 hours after the last unintentional M1 attack (it was not deliberate i read the thread,) here is another. That aside, Id probably use a different oil than M1 if i ever bought a Porsche, based on what ive read. Doesnt matter to me if Porsche used it or not.. on a 22 year old car like a 944, its time for an OC anyway.

Something tells me the Factory Fill M1 is from Europe as well so the American M1 may be different.

Just a thought. Nothing more.

Seriously, though, look at Porsche more than M1 for the flaw same with VW and Audi Turbo Engines, unless the M1 folks like to screw with Porsche owners on purpose and give them oil with Corrosive Acid in it just for the factory?

I dont know.

 

[glxpassat]

The formula in Europe is different, it is the same as the US SL version and states "Porsche Approved". The US version lost the VW 503.01 Audi high horsepower turbo spec rating and has stated for years on the back of the bottle "Porsche approval list 2002" (when it was SL rated). Yet, the Porsche approval list since 2002 has only listed one version of this oil. This makes me think Porsche was not aware of the different formula in the US.

 

[HangerHarley]

Originally Posted By: glxpassat
The formula in Europe is different, it is the same as the US SL version and states "Porsche Approved". The US version lost the VW 503.01 Audi high horsepower turbo spec rating and has stated for years on the back of the bottle "Porsche approval list 2002" (when it was SL rated). Yet, the Porsche approval list since 2002 has only listed one version of this oil. This makes me think Porsche was not aware of the different formula in the US.


Quote:
Something tells me the Factory Fill M1 is from Europe as well so the American M1 may be different. Just a thought. Nothing more.

 

[saberz]

Originally Posted By: The Critic
Gosh darn it! Those quick lubes were right! Every 3,000 miles is the way to go!


Those failures appear to be defect-related, but I am sure someone such as Kestas is in a better position to comment given his background in metallurgy.



With a car that pricey and power train combo it may be overkill but worth it.

 

[Oldwolf]

Weird how the cam sprocket wore on the tooth tip. The tooth Arc of Action looks funky too.

 

[river_rat]

Originally Posted By: Gary Allan
This is obviously a metallurgy issue.

Agreed.
I'll say it again: The biggest physical factor in engine wear is the design/build of the engine and its individual parts. Not the oil. Not if the oil meets specs and is changed when needed.

If the engine eats itself on any decent spec'ed oil, then the engine is the weak point, and only then maybe a "super oil" might save it for a while longer.

My 2 cents.

 

[buster]

http://www.foxnews.com/leisure/2010/03/18/jd-power-ranks-porsche-tops-reliability-lincoln-second/

Quote:
Porsche shot to the top of a closely watched study of long-term vehicle dependability, overtaking U.S. and Japanese rivals, J.D. Power and Associates said Thursday.






Navarro is obsessed with oils that have very high levels of ZDP, and in some instances rightfully so.

 

[Gary Allan]

Indeed. The image is in too tight to clearly see multiple teeth, but the neighboring tooth doesn't seem to be in the same condition. We can't even see if the sprocket is "overly worn overall".