I just emptied two more East Tennessee stores of their GC green and their Belgium 5w40. The manager of the store asked me, "what sort of motor are you using that oil in?" as he pointed to the GC. I told him that it was going into the new GM 3.5L V6. He replied, "Oh, I new it had to be something new. That's too thin for all the GM motors I know about." I told him that some of the Fords are using "even thinner" oil. He said, "Well, they 'sound' thinner because of the 20 number, but they are 5W not 0W. Zero W is just too thin." I just smiled and said "well I'm going to give it a try". I walked to may car, loaded my stash, and moved on.