Thoughts On This Used Oil Analysis
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2nd Gear
Joined: Feb 2023
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Thoughts On This Used Oil Analysis
I just got a used oil analysis after reading about them on this forum, and the results seem mixed.
2005 997.1 with 61k miles. IMS bearing was upgraded with an LN unit. AOS, clutch etc were done at the same time, around 15k ago.
The elevated copper and iron levels spook me a little, as does the lack of molybdenum despite using "Liqui-Moly Leichtlauf" 5w-40 for the last 6000 miles (3000 on each change, but did not do a UOA sample last time)
Is there anywhere other than bearings, that copper could come from? Does anyone know what Blackstone Lab's so called "Operational Factors" might contribute to this? The car is occasionally spiritedly driven in the canyons, and daily driven on the street, no track time.
It seems like the other UOA I have seen on the forum do not look like this. Copper is usually much lower.
2005 997.1 with 61k miles. IMS bearing was upgraded with an LN unit. AOS, clutch etc were done at the same time, around 15k ago.
The elevated copper and iron levels spook me a little, as does the lack of molybdenum despite using "Liqui-Moly Leichtlauf" 5w-40 for the last 6000 miles (3000 on each change, but did not do a UOA sample last time)
Is there anywhere other than bearings, that copper could come from? Does anyone know what Blackstone Lab's so called "Operational Factors" might contribute to this? The car is occasionally spiritedly driven in the canyons, and daily driven on the street, no track time.
It seems like the other UOA I have seen on the forum do not look like this. Copper is usually much lower.
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Honestly, I'd change oils. I've seen a trend with this LM oil where it's producing higher than normal iron and copper than most other oils used in 997s and am not a fan. Put in Driven DT40 or Motul 8100 xcess and those numbers will get cut in half.
Last edited by Petza914; Feb 8, 2023 at 09:07 AM.
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Burning Brakes
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Cool. Just switched to Driven Oil this last oil change, can’t wait to see the new results on the next oil change.
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Thread Starter
2nd Gear
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Thank you all for the input. I suppose I will switch to the driven dt40 oil. A shame that I already put another round of liqui-moly in when I did the oil change / collected the sample for blackstone. Sounds like this will be a short oil change interval!
I will try and report back with results in 3000 miles or so...
I will try and report back with results in 3000 miles or so...