Hello everyone. I am learning a lot from this website and wanted to ask what is the best dino oil out there for this cold weather and my driving habits. Currently I live in Montreal, Canada and using 10w30 Castrol in my Taurus SHO. I start the car in 40ºF (heated garage) and drive it to work (4 miles one way) and park it outside where it averages from -10ºF to 5ºF. Then I use my automatic remote starter which starts the vehicle every 2 hours to "keep" the fluids warm. What are your opinions, should I stick with Castrol's 10w-30 or should I use another dino oil. I don't use synthetics because I change my oil every 3 months/3K miles. Thanks.