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Old 04-23-2019, 12:14 PM
  #61  
sampelligrino
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Seems like weight has a hand in this? PAG recommends 0W40 but seems like many are running 5W40. Due to cold weather and/or cold start? Didn't know people ran 5W40 in LA but some do
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Old 04-23-2019, 12:24 PM
  #62  
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Originally Posted by sampelligrino View Post
Seems like weight has a hand in this? PAG recommends 0W40 but seems like many are running 5W40. Due to cold weather and/or cold start? Didn't know people ran 5W40 in LA but some do
Yes. 5 vs 0 provides better protection when hot. 0 is all about manufacturers hitting their MPG numbers. Lower viscosity, lower wear protection, better gas mileage.
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Old 04-23-2019, 12:26 PM
  #63  
Greg D.
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Originally Posted by Airbag997 View Post
Mobil 1 is an inferior oil, with inferior additives to mitigate wear. It scores poorly in all the ASTM performance metrics. All these FACTORS contribute to bore scoring and the like. This is not a one-dimensional problem, it's combinatorial.
Interesting, thank you for bringing that up. I assumed Mobil1 was still the same old good oil, wasn't aware of a decline in formulation.
It's not a religious issue to me, if Motul is provably better (and the above posting seem to indicate so) then I'll use motul. I just ordered some.
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Old 04-23-2019, 12:31 PM
  #64  
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Originally Posted by Airbag997 View Post
Yes. 5 vs 0 provides better protection when hot. 0 is all about manufacturers hitting their MPG numbers. Lower viscosity, lower wear protection, better gas mileage.
Ok lol yet another reason to switch, thanks bro. Auf wiedersehen m1 0W40
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Old 04-23-2019, 12:39 PM
  #65  
Charles Navarro
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Originally Posted by Airbag997 View Post
Oil analysis is hit or miss. People put too much stock into a murky science at best. Go ask the E9x/S65 owners how effective their Blackstone Oil Analysis worked for them when many of them won their rod-bearing lottery shortly after a "successful" Blackstone analysis....

Empirical performance data is the most useful data. Mobil 1 has poor ASTM empirical performance data. This isn't a difficult concept.
Used oil analysis is only as good as the lab that is used. Blackstone's unit averages and commentary lead people to believe their engines are ok when in fact, they aren't.
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Old 04-23-2019, 12:50 PM
  #66  
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Isn't this test posted earlier generally known to be a bull$h1t test for car engines???



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Old 04-23-2019, 01:04 PM
  #67  
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No. The test is an actual ASTM test, likely carried out by SWRI, who Driven and even OEMS use for similar testing.

Perhaps you are thinking of a Timken Falex tester, which the results can be easily skewed depending on how the load is applied, but mostly by how much moly is present in the lubricant.
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Old 04-23-2019, 01:10 PM
  #68  
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Originally Posted by Charles Navarro View Post
Used oil analysis is only as good as the lab that is used. Blackstone's unit averages and commentary lead people to believe their engines are ok when in fact, they aren't.
I agree, some labs are better than others. But oil analysis (spectroscopy) is still a inconsistent/murky method/science wrt oil. Especially with the varying quantity of additives high-end oils use, which further obfuscate the results.
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Old 04-23-2019, 02:47 PM
  #69  
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Originally Posted by Charles Navarro View Post
No. The test is an actual ASTM test, likely carried out by SWRI, who Driven and even OEMS use for similar testing.

Perhaps you are thinking of a Timken Falex tester, which the results can be easily skewed depending on how the load is applied, but mostly by how much moly is present in the lubricant.
These are some of the links that made me question it.....

https://www.bobistheoilguy.com/forum...Number=1584948
https://forums.noria.com/topic/4-bal...lick-marketing
https://www.eng-tips.com/viewthread.cfm?qid=38168
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Old 04-23-2019, 03:02 PM
  #70  
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Brinelling is brinelling.
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Old 04-23-2019, 03:35 PM
  #71  
Noah Fect
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Originally Posted by Airbag997 View Post
They added additional oil-channels so more oil could flow on the cam lobes that were exhibiting excessive wear. Excessive wear is also mitigated by a better oil. Mobil 1 is an inferior oil, with inferior additives to mitigate wear. It scores poorly in all the ASTM performance metrics. All these FACTORS contribute to bore scoring and the like. This is not a one-dimensional problem, it's combinatorial.
Even the best oil won't do a good job if it doesn't reach the surfaces that need lubrication. Now that Porsche has made the necessary engineering changes, we might find that a GT3 engine with Mobil 1 fails in 221,144 miles while one with your oil of choice makes it all the way to 223,930 miles. Conversely, an unmodified engine might frag itself in less than 50K miles through no fault of the oil.

In other words, nothing in the history of this particular problem tells us anything about the effect of oil/additive quality. Agree/disagree?
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Old 04-24-2019, 10:14 AM
  #72  
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Originally Posted by Airbag997 View Post
I agree, some labs are better than others. But oil analysis (spectroscopy) is still a inconsistent/murky method/science wrt oil. Especially with the varying quantity of additives high-end oils use, which further obfuscate the results.
Oil Analysis is essentially "Tribology" which is a branch of quite many scientific fields such as Chemistry, Engineering, and Physics. Tribology is a highly disciplined quantitative research science. Oil analysis is not spectroscopy. Tribologists use spectrometers and FTIR. Maybe that's what you're thinking?

Last edited by NuttyProfessor; 04-24-2019 at 11:01 AM.
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Old 04-24-2019, 10:19 AM
  #73  
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Originally Posted by Al.Fresco View Post
Isn't this test posted earlier generally known to be a bull$h1t test for car engines???




Why is this graph considered relevant to Mobil 1 0W-40?
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Old 04-24-2019, 10:32 AM
  #74  
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Originally Posted by NuttyProfessor View Post
Oil Analysis is essentially "Tribology" which is a branch of quite many scientific fields such as Chemistry, Engineering, and Physics. Tribology is a highly disciplined quantitative research science. Oil analysis is not spectroscopy. Tribologists use spectrometers and FTIR. Maybe that's what your thinking?
I suggest you read this: https://www.blackstone-labs.com/abou...-oil-analysis/

"Spectral exam:
In the spectral exam, we take a portion of your oil sample and run it through a machine called a spectrometer. The spectrometer analyzes the oil and tells us the levels of the various metals and additives that are present in the oil. This gives us a gauge of how your engine is wearing. To learn more about the elements we look at and where they come from in your oil, go to our Report Explanation page."
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Old 04-24-2019, 10:33 AM
  #75  
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Wow. I can't believe I stumbled upon this thread. I thought it was just us M96/M97 owners that had this bore scoring problem.
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