Very Cold Winter Driving Questions

[BenzOnline]

It is extremely cold here where I live now for a week or 2 and it aint no signs of warming up. Im doing mainly city driving now and my question is how much harm is it to the car with the constant starting/stopping of the engine in this cold? I warm up the car and drive it always till the engine warms up enough until I park it but then in an hour lets say, I need to go again and its another ongoing process from very cold to warm. The transmission makes a short "hum" when coming to a stop due to the cold aswell.

I am using a thinner oil aswell with synthetic in it.


Any opinions everyone.......just curious?