- Oct 17, 1999
- 8,883
- 107
- 106
Hey so when I wake up and get to work at 5:30 in the am every day here in balmy Colorado the temps are constantly below zero these days so I was wondering about the internals of a car. I let the thing warm up and defrost the windows but the motor is still below operating temps until I start driving her. Do the internals cause more wear at idle or driving her sooner? Bonus question: will 5W oil really adversely affect mileage?