In 2013 I bought one Matrix for my daughter and one for my daughter-in-law. I drained the 0w20 FF on both around 600 miles, and put in
PC Duron 10w30. In the spring of 2014 I went 50/50 10w30 and 15w40 Duron, both of the same CJ-4 chemistry. Vis @ 100C about 13.50.
Both were 5 speed standards. My daughter the far more aggressive driver drove the crap out of her car. Driving 45 miles to and from UBC on the Sea to Sky highway with her foot to the floor the whole way. That car ended up with straight 15w40 and once went 12,000 miles before I got around to changing the oil. It was just above the add line.
Previous to the Matrix, she drove a 2010 Yaris. Same thing, except one year I put SAE 40 in it. That car never used oil, and was a trade in for her Matrix. As a precaution, I only mix 'n match the same brand and family of engine oils.
If I had to suggest one cold climate oil for year round use I'd pick Chevron Delo 400 5w40 CK-4/SN plus.
Mobil 5w50 Dexos R would be interesting.