I know it's normal, but I wonder how good this is for the engine in <30 degree temperatures before oil has a chance to circulate and recoat the engine properly.
Modern oils for winter use (and specially the 0w-20 that mazda uses in CX-5 or perhaps even CX-3) do not need to be warm to circulate. They are already very fluid enough to circulate, so just start and drive away. I am surprised that some motoring schools in USA still tell students to start the engine and wait for few minutes before driving off (very unnecessary, and very polluting and very old fashioned when the oils were not really multigrade and thin). We drive cars in minus 30 degrees C sometimes here in Sweden and the instructions from the car makers and driving schools is that, you just start and go. Of course for the first few minutes there is going to be some pollution because of cold engine and partially burnt gases but the engine under load warms up quickly and emissions come down. And you have travelled a distance in that time instead of sitting in the drive way and polluting the world.
In the northern Sweden where the winters are long and intense people use electrical engine heaters (combined often with coupe heater) on timer so that there is even less pollution on start and you get to sit in a warm car.
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