Shifting sweet spot

What truck are you driving, what motor and is it a 10, 13 or 18 speed.

 

It isn't just the engine, transmission, and differentials, you also need to consider the load and the slope.

On flat ground, I upshift at around 1300 RPM, dropping to 1000 RPM, no matter what weight I have in the box.

If I am on a significant slope, I upshift at 1400 if light, 1500 if heavy.

If I have issues upshifting at 1500 RPM and maintaining speed at 1200 RPM, I downshift and run at 1500 RPM.

HINT...

If you have a instant fuel economy indicator, that can tell you if your engine starts working more or less to maintain speed, even if you are having a hard time hearing or feeling what the engine is doing.