On a steep uphill pull in the summertime, set the throttle wide open in whatever gear it takes to pull the hill at walking speed or so, then climb out on the running board to steer and get away from the heat inside the cab. I've seen pictures of big rigs pulling the Grapevine Hill in California that way.
Jerry
You wouldn't happen to have a copy of those pictures, would you? That sounds like it'd be interesting to see.
