I'm I going to be the first to say that being afraid to run the recommended OEM oil is being rather irrational? But you're more comfortable running an aftermarket dino?
It`s like I mentioned once before, it has had nothing but 5W30 for 97,400 miles. And to go to a thin oil like 0W20 has to have some affect on it. I would think so anyway after being around engines most of my life. If I muster up the courage to try it, I`ll pm you and let you know how it is.