I recently read in one thread that motor oil with esters sticks to engine parts better after shutdown. Then I thought: Delvac 1 is 24 or 26 percent esters right? Maybe that makes it stick better to engine parts, and that's how it's able to show excellent wear numbers without using moly...it simply doesn't need it. It sounds good to me, but a person usually needs someone else to point out mistakes. What do you guys think? Does my theory sound right at all?