I searched to see if something similar already existed here, but did not find anything.

I thought it would be beneficial for others to share your Oil Analysis including mileage and oil type and for how long you it has been used.
We could compare the highs / lows and have a good catalog to see if there are trends among the different oils used, with data behind it?

Yay / nay?

Mine:
2002 Turbo

SWEPCO 5w30 from 45k (2012) - 112k (2021) miles - California
Mobil 1 5w50 from 112k (2021) - Since my ownership in July 2021 - Tennessee

 

That is some interesting data - the report writer does not seem to think it is all that bad, however, I find it curious that some of the particulate levels are above 'average'. I like the suggestion to check the air filter, but it might also be useful to 'rinse the engine' with a full change of oil, then add a second change, run it for 3 - 4k miles and analyze again, as the numbers might just be reflecting 19 years of 'use'.

 

And residue, sorry forgot to add that.

 

Why are you running a 5W30 oil? That's nucking futs.

 

Yea I agree about the seemingly high elemental particulate, but I also don't have a baseline either... PO used SWEPCO, as his shop (S-Car-Go) suggested it, and maybe some is attributed to additional minerals in the oil, but I wanted to swap to a synthetic, so i went for the M1 5w50 to see how next analysis goes... that will be an interesting comparison

 

Mobil 5W50 is an excellent choice for TN, especially.

 

The cST viscosity "value" is too low for this engine.
Look up fellow Rennlisters for 5W50 "reports" Just to see the swing. You will high 14's low 15's after 3500 to 5K miles..

 

Besides changing the specific oil you use, what else can you do based on oil analyses?

At what point do you dive into the engine's internals based just on oil analysis data?

 

Not an oil expert by any means but while Swepco non-synthetic is a great choice for air-cooled engines, i never heard of it being used on 996tts. I wonder if the previous owner's shop might have got confused with air-cooled requirements.

 

From my side, I've only read as well it's popular for Air cooled, but the shop in mention, is apparently a very well known Porsche shop... Air and Water cooled.
I knew this from the beginning, and didn't concern me... if it does (ultimately) show any cause for future failure, that's another thing... but runs and feels great!

I plan to use it as a tracking tool (passive), more than active monitoring...
You can monitor the different metals in the oil, thus telling if you're losing (wearing) bearing material, coatings, etc...

It's a subtle tool in my opinion, but like I said, I'm interested to see the difference in the difference from SWEPCO --> M1 5w50

Will do, I assume you're suggesting 0w40 M1?
Do you mean I want high 14/15 or that is what I'll get with this oil?

EDIT: @Kevin I misunderstood your post originally, thinking you said 5w50 was too low... now I see you were referring to the Analysis I posted...

 

I think it's a good to have the oil manufactures specs. Mobil, Motul, Redline. You can compare them to Blackstone virgin oil analysis or VOA.
Here is a blend that I run in four of my cars.. Redline 0W40 and 5W50 blended 50/50 or 1 to 1 ratio.
Look at the cSt viscosity @ 100C for the Redline blend "17.10" The end result is having a used oil viscosity above a 30W oil.
We want to prevent accelerated engine wear with metal in the oil. This does increase when the oil shears to a 30W.

You can do that with Mobil 1 Blend 0W40 and 5W50 50/50... In hot climates.. I'd just run 5W50..
I do not recommend running straight Redline 5W50 because the viscosity is "thick"

The perfect oil is the one that can show zero to no engine wear between oil changes. In fact some oil will reverse the trend and decrease the metal in your reports.

 

OK I'll bite. All changes with Mobil 1 - mainly do this for piece of mind to track trends over time. Comparing against OP looks like some significant differences in oil composition and wear metals are higher in OP analysis but my mileage is half of his car if that make a difference.

 

Wow, only 1,500-2,200 miles between changes?

Looks like you're changing based on age of oil, and not miles... or do you Track your car (DE events or similar)?

 

Something to note / question from my side...

How do you collect your samples?
I poured from the filter... which may contribute to the dirt / silicon content?

 

Ideally, you should collect from the deluge of oil from the main tank. But not from the very beginning of the drain, somewhere in the middle.