Thank you Hans for taking the time to post this stuff!
My head still hurts with all this techno speak, and now my heart hurts with guilt to boot! I've been using M1 10w-30 full syn since 7400 miles in my Z. I'm beginning to wonder if the car's original owner was correct in using Dino oil for the first 7400 miles? The only clear, to me, statement is that 800 ppm at the minimum is what we need in our motors.
Oh well back to the AMSOIL site for more reading, and then on to the Red Line site for still more reading. I guess I should call my ZR-1 bro in CT and tell him to come over to read all this stuff. Man is he gonna be pi$$ed at me, I told him to use M1 full syn in his "new" Z.....