Dodge cummins 5.9 or 6.7 ?
I'm looking to buy a newer truck for hauling a 5th wheel. For those who have had both 5.9 & 6.7 engines, which do you think is better and why? Right now I'm leaning towards the 5.9, because it has a l...
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IdaD wrote:
The vast bulk of the failures on the 68RFE I've seen reported have involved tuned trucks. Leave the power stock and it seems to perform pretty reliably. I don't have any issues with the way mine shifts, unloaded or with a trailer in tow.
Start tuning and maybe it is weaker than the others. I find stock power more than adequate so I have no intention of finding out.
Have you tried it in cruise control on a downgrade, that seems the only time I get a bit rougher downshift when trying to hold the speed set on the cruise, but only with the weight of my fifth wheel. As said before all other situations its smooth down shifting.
Being that its supposedly a learning transmission, the downshifting on grades seem to be getting smoother as times goes on when towing.
