[Diesel_Dave]

Today the weather was a little colder (high 30's), but warm up was about the same as yesterday. FE wasn't as good (only 35.2), but that was due to catching some lights badly as well as a school bus--all towards the end of my commute. Prior to the disruptions my mileage was tracking about what it normally would be on a warm day, maybe even a little better.

Before starting out, I crawled under the truck and put my hand on the oil pan to see how hot it was getting. With the heaters on for 5 hrs it was definitely warm, but still cool enough that I could comfortably keep my hand on it. I was concerned about potentially coking the oil, but I know I'm fine now. I'm not sure how hot it was, but operating temp is >200 F, and I know I wouldnt be able to keep my hand on that. I think I may try leaving them on all night tonight and seeing what happens.