the much tighter tollerances in the modern engines is why they need 0 weight, the thicker it gets the more it is like glue with that tight and precise of a tollerance. MPG on a demon or even a hellcat is insignificant. If they thought it was going to destroy and engine with that 60K warranty and they could solve it by recomending 5 or 10 weight they would be all over it.

I am not causing global warming, I am just trying to hold off a impending Ice Age!