Hmm, food for thought. I am going to run my oil this time and see what comes of the next a analysis. I was definitely sad/upset that it came back like it did.

I have a feeling that some of the high levels are due to the new vacuum pump which I put in uncleaned and the change being a first run of synthetic over 5000 highway miles, where the previous owner made mostly short trips. I also pulled the sample 1-2 quarts into the drain since I'm used to a 4 quart sump.

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Garage:

2017 Chevy Colorado Diesel (nanny state emissions)
2005 Volvo S40 T5 AWD, 77k
1987 Mercedes-Benz 300D turbodiesel, 4 sp auto, 156k - 28.7 mpg
1996 Tracker 4x4, 2 door, 16v, 3 sp auto. 113k - 28.6 mpg

WARNING: this post may contain dangerous free thinking.