Originally Posted by
cavitation
I noticed on my 2000 F-350 7.3 here in the Seattle WA area that while it does not get extremely cold, it does take my truck forever to get up to full operating temp (around 195 degrees). I if leave in the morning with the temp at around 40 degrees after idling for about 1 minute, it will take approx 16 miles to reach the 195 degree range!
We just had a week where it was around 10 degrees every morning. It took about 1.5 to 2 miles to start blowing warm air and about 5 miles to be blowing hot air. It wasn't to full operating temp by that point, but the air was still pretty hot. The temp gauge was on the N by 5 miles and it took it a few more miles to get up to the O and R. So I would say no more than 8 miles to be at full operating temp.