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FWIW, I retired from the defense industry, but have a somewhat technical background.
I did a bunch of oil testing back when I had an Infinity...they recommended oil changes (not synthetic) at 3750-miles, which I felt was way too often. After testing the oil, I found that was true. Then I switched to synthetics, and found that I could get the same level of protection after 3-4x the life as with the OEM suggestions with fossil fuel based oils, which saved not only money, but time and hassle. I only did a couple of tests on my BMW, but found it was still easily within normal specs after the CBS logic's limits. Since I retired, I don't get anywhere near the max miles before the annual timer expires, so I don't worry about it.
There will tend to be a higher accumulation of wear metals in the first oil service interval, but as long as the TBN and viscosity are good, no problems. The engine will have some wear metals as things seat themselves, then things stabilize.
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