Semi Retired Grandpa wrote:
Ford can and should do better - other manufacturers certainly do.
They did on the new systems.
Ford/IH built the gasser V10 and 6.0L PSD to rev and they do. They are NOT low RPM motors like the I6 Cummins. When it needs to accelerate or maintain speed on an incline with a load behind it it will downshift sometime maybe 2 gears to maintain that speed. Keeping it under 55mph/90kph with the T/H button on will normally keep her out of OD lessening the downshifting of the tranny but this does use more fuel. A set of 4:88's like in the F450 will also lessen the downshifting :)