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I'm hoping that the new 6R140 transmission will address much of the reported tendency to over-rev on downshifts; which I expect is the result of a double downshift from OD to 3rd gear on the present 5-speed.
With the 5-speed if the engine was running at 2,000 RPM then a double downshift would increase RPMs to around 4,400 (plus any TC slip).
With the 6-speed a double downshift should increase RPMs from 2,000 to only around 3,400 RPMs. That should make a big difference.
If the transmission logic is set up right, it may not be necessary to take the motorhome out of cruise control on hills. But if programmed to do something stupid like a triple downshift from 6th to 3rd, I'd take it out of cruise control and shift it manually.
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