Hauling my trailer

I know this isn't your situation but I'm sharing this as more of a worse case scenario. I have a 15,000 lb 5th wheel that I towed with a 1986 Chevy 3500 dually crewcab. It had the 7.4L V8 and 3 speed automatic. On grades like Big Bear, up to Shaver Lake in the sierras and the Grapevine (I-5 south out of Bakersfield) I would have to get down into first gear and travel at 22MPH up the grade. The temperature gauge would come off of normal and hit 200 if it was a hot day but the truck handled the grades.

I often would feed the squirrels as they ran alongside...