I have run SOAP programs on Army aircraft and even the trucks for decades.
For the trucks that are often used very little it is good to determine when the oil needs changing as it can be years, not months and you save a lot of oil that way.
For the aircraft it was essentially useless even though we pulled samples on all oil lubricated components ever 25 flight hours. In 20 years on fleet sizes of 24 to 36 aircraft, it never, ever once pointed out a failing component that wasn't detected by other means first.
You want to really know what is going on in your engine wear wise? Cut open the
oil filter and inspect it for wear metals and carbon, what color is the metal, and will a magnet attract it? Really should be NO metal to speak of unless engine is new or newly overhauled.
But if Spectroscopic Oil Analysis makes you happy, for it to mean anything, you need a baseline established over several analysis, totals are almost irrelevant, what you look for is steadily increasing trends of a particular metal.
Although it can find
fuel and water dilution as well as dirty oil like from a bad air filter on a farm tractor, but so can you, without analysis.