Transmission oil change

[Chamberpains]

-25c is -13f. I've had no problem with mine at that temp. Just a little slow at start up. So ya, a little longer warm up to get the oil warmed up. I also flip all selctor switches multiple times after warm up, but before I attempt to move the truck. This gets the cold thick oil off of the synchronizers. They may grind a little is you skip this step. And it may not be the oil on the synchronizers as much as its frozen moisture in the air solenoid or selector donut being a little stiff and slow.