Right now M1 0/40 beats the snot out of any 5/30 in every season, doesn't cost any more, works well in all motors so IMO if the potential for -30F exists why not?
I have tried M1 0w40 in my Hyundai GDI and the engine does not run anywhere near as well in the winter as compared to when I use a light 5w30 like Valvoline Modern Engine. My other vehicles like the 1998 Ford Exploder and 2005 Dodge Sprinter absolutely love 0w40 oils like Castrol, Valvoline, and M1 year round.