You are a bobistheoilguy memeber aren't you? I am fwiw.
All of what you said is accurate, but as stated you need to use the right spec oil for your vehicle and change as needed based on your driving habits and location. What I've noticed over the years is, those with 100,000 miles+ without engine problems on their vehicle have one thing in common. They change their oil and filter and do regular maintenance on time. The oil of choice seems not to be the constant.
Hopefully this did not come off as anything but adding to the discussion.
