I actually like the idea of the 0/ and 5/ oils. The lighter flowing abilities when the oil is ambient temperature means much less wear on cold startup while still having 20 or 30 or "whatever weight" when warm. That means less engine wear.
@Wyrmrider has some interesting info on that, apparently he runs Euro-spec 0W-40 oil in his Magnum engine. I think I'm gonna give it a shot this winter in my Duster.
But overall, stock old-school Mopar engines will last forever on even the cheapest Wally World conventional because it's still better than most of what you could get back when these cars were new.
