Its funny you say that bcz I actually did read the thread. From what I understand the 0W-40 is unecessary for the warm climate that I live in. If I lived somewhere with below freezing temps than maybe it would be a benefit, but I live where it barely gets below 50 degrees.
As you know the manufacturer recommends 5W-30, I was content with sticking with that until my mechanic told me otherwise. So besides it being an ACTUAL Synthetic, what advantage would I see from running 0W-40 in my non-peformance, daily driven, warm climate residing car?