[jb92563]

The numbers are nice to know but if you saw a divergent number would you know if its a problem and what causes it?

Is there a guide to oil analysis results or do they provide comments/suggestions when the numbers go out of spec.

Why would a car engine have so much calcium in its oil?

Too many one a day supplements? Coolant leaking into the oil?
I suppose you are what you eat so fossil fuel and lubrication oil makes sense for calcium.

And silicon from sand may be entering the induction system and accounting for some perhaps but doesn't steel
and other metals have a silicon component and perhaps that number really indicates wearing of parts or did the air vent in the lab introduce 1 part of silicon
or was their analysis device not calibrated that day (Is 1 part per million even signifigant?).

Are the actual numbers that important or is it the changes from your baseline that are really the most important thing to use as a diagnostic and preventative maintenance tool?

Just posing some questions to see how such data can really be used and if you need yearly reports or every oil change to make meaningful conclusions.