I have started multiple vehicles @-35F and lower after cold soaking at my workplace parking lot for 12+ hours. They start poorly, idle poorly and run poorly until somewhat warmed up. Many automatic transmissions will not shift above 2nd gear until the transmission builds heat. Manual transmission vehicles take extra effort in gear selection as it feels like they are full of taffy. After my first winter here 15 years ago, I changed to 100% synthetic oils just for the cold flow/pumping characteristics. I have also installed engine heaters on my daily work drivers which are great if I manage to get a parking spot with a receptacle. It is interesting how cold air sinks. It can be -40F along the river in the parking lot and a balmy -20F 1/4 mile away at the entrance gate into the plant on the bluff maybe 100 feet higher in elevation. The coldest I have seen it was on Interstate 25 near Casper at the bottom of a draw where my car temperature readout was -58F and, like usual, a warm -35F at the top of the grade. I can tell you this. Wyoming is going to be in my rear view mirror when I retire.
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