jimh425 wrote:
should I expect high revs to maintain 65-70 going up mountains with this type of load?
YES.
BUT.....you should NOT necessarily expect to maintain the posted speed limit when ascending a steep slope.
If the "big trucks" are going 45-50, fall in line. The transmission may still downshift but hopefully not as much.
If you normally "cruise" at or below 2,500 RPM, then on a steep slope with a load 3,500 to 4,000 would be perfectly normal.....especially if you insist on maintaining your speed with the cars.
