Originally Posted by WPG D33Z
I waited about 2 minutes today. I wait until the revs drop on idle.
Let my car sit in -40 for 2 days... lights flickered and it started pretty weak, thought it wasn't going to catch.
I also let it sit for around 5 minutes until the revs have dropped down.
I drive around for 40 minutes and the oil temp hasn't moved. Inside it is blowing luke warm air after about 10-15 minutes of driving so it's not completely unpleasant. For the first 10 minutes though the blower fan makes an annoying squeal noise.
Had the thermostat replaced in December, so I know that's good. -40 is just too cold!