Phil , I read the beginning & last post of this ---------Just what is the subject ??
All oils will eventually collect carbon from piston/ring blow by , valve actuation , etc , thereby degrading their lubricity , I don't care what the analysis's try to spew .
Some will try to convince that various crankcase ventilation systems reburn these carbons -- true , but not all of it .
An easy way to tell if your engine is running efficiently & clean is to look at the inner tail pipe color ---- very light brown is good , darker to black --- not good .

FYI , Don't use synthetic base oils to mix w/ gas for 2 strokes & then store the motor , the internal residue will eventually produce moisture & ruin it .
That's my story .