I did a UOA on my 2021 Cayman S purchased new as I saw some metal debris in the second oil change (first oil change free by dealer)which I thought was from manufacturing but wanted to confirm. The UOA is from my third oil change A 8745 miles and 2186 OCI. As you see car doesn't get used much as it is a third car but oil changed on yearly basis while under warranty. I am using Motul 5w-40 8100 C40 spec. Not sure what I am looking at(first UOA) so any guidance would be appreciated. In the comments they say 3800 miles on the oil but on the top it clearly says 2,186 mile....probably a typo
UOA 2021 Cayman S 2186mi OCI, 8745mi on the car
- Thread starter raaizin
- Start date
The 3,800 miles is not about your Porsche it's pointing out what BlackStone's universal wear averages are based on to the furthest right column. As for the results everything looks good. Especially this early in the engine's break-in period. Silicon very low. Great report. Thanks for sharing your UOA.
Not bad and it is still in the break in phase with just 9k miles so it's likely to trend down a bit more. A lot of engines don't really end break in until the 25-30k point but it also depends on running hours. I wouldn't worry about it wouldn't feel the need to do another uoa soon but you can if you want in another 4-5 years I suppose.
As @fantastic said, the far right column is what BS calls Universal Averages. This is an average of all the healthy samples BS has received for this engine. The 3800 miles refers to the average miles driven on these Universal Average samples.
Let's compare your results to Universal Averages.
UA total wear metals: 24 divided by 3.8 (3800 miles) = 6.3 parts per million per 1000 miles.
Your sample: 21 divided by 2.186 = 9.6ppm per 1000 miles.
Given that you only have 8745 miles on the engine, this is a very good result. As engines wear in, the amount of metals they produce typically goes down. From what I've seen here, engines typically finish wearing in by about 15000-25000 miles. From then on, when you get a UOA, what you get should look closer to Universal Averages, and anything that is out of whack will be a warning to investigate further.
Similar threads
