Converting to miles (kms in the report as shown) ...
- the most recent was only about 5.3k miles; with 93ppm Fe. We rate of 18ppm/1k miles.
- next down was 6k miles; 88ppm Fe. Wear rate of 15ppm/1k miles.
- next before that was 2k miles; 38ppm Fe. Wear rate of 19ppm/1k miles.
- the "22,000" OCI was actually 4 UOAs ago, and is akin to 14k miles with 200ppm Fe. Wear rate of 14ppm/1k miles.
I'm not a fan of having Fe above 100ppm in any OCI, but ironically it gave you the lowest wear rate. The wear rates are fairly consistent (pretty darn high).
This looks like a combination of Si and hard use. You had an air intake issue, and it may be continuing, or residual Si is still doing it's work.
The long OCI could possibly have been to blame, but the three most recent UOAs are short, and yet wear is still high.
It looks like you're averaging about 4k miles a month; that's a lot. Also, seems to be a UOA/OCI missing in there? The vehicle miles versus the UOA miles don't match up for the first one.
And here I thought PAOs were the magical fluid and would stop all wear across the planet ... that's what most BITOGers want me to believe.
You might want to consider, if you're willing to experiment, trying a dino 15w-40 or 10w-30 HDEO and see what happens. I doubt the wear can get much higher, and it would save you some money.