I live in northern NY, about 35 miles from the Canadian border, and I have to agree that Mobil Super is great. I am running Super HM 10w30 in my Cherokee right now, and have no issues with it starting without any extra effort with our current sub-zero weather. It is a blend, but has the same pour point as the conventional, and only costs about $1.30 more for 6 qts at walmart than the conventional.