I have a 1999 Chevrolet Cavalier with the 2.2L engine. I bought it new in December of 1998. I drove it home, while still hot I drained the factory oil and replaced it with Mobil 1 15W-50 and a Wix filter. It has had nothing else other than M1 15W-50 and now has 209,700 miles on it, doesn't use oil, leak oil, seep oil, and gets better than the EPA estimates. Obviously I like the M1 15W-50.
I lived in Pulaski Va for 10 years, Tazewell for 4 years, and Castlewood for 5 so I know the weather there. No problem with M1 15W-50.
This is my experience with this oil in this engine. You must decide and will likely get much more information.