It's -34°C or an honest-to-golly-gosh-darn 30 below F, so since I've been ensconced all day and evening curled up with a good iPad, avoiding the hungry sabre-tooth tigers looking for prey on the street, I decided to start the dead-block-heater car to see if it would, because I need it tomorrow.
I was confident it would and it did. The starter turned more slowly than normal, which also was expected. The motor, with 0w-30 in it, caught on the sixth r-r-r-r-r vroom.
I idle-speeded it down two back lanes for 1.3 kilometres before the temp needle lifted off dead cold, then a little further until the needle moved up to the next gradation, before driving normally.
But the temperature wouldn't climb completely to normal until I turned the heater off and waited a couple of minutes while driving at normal speeds.
I drove about 30 kilometres at 80 km/h, during which time the temp gauge dropped below normal again. I had to turn off the cabin heat once more to raise the temp to normal. But at -34 and the heater off, it doesn't take long to feel the chill. This was the first time that's happened after the initial warm-up.
So I drove back with a cooler-than-normal engine but turned the heat off again a couple of minutes and a few blocks from home, raising the temp to normal before shutting down.
The anti-freeze isn't low or slushy. It's just that dambed cold out there.