I also use tow/haul and overdrive all the time I'm towing. I let the transmission figure out what gear to use. In past trucks if the transmission would tend to hunt, back and forth between gears a lot, then I'd pull it down a gear manually. That constant shifting heats up the transmission and heat is what kills a tranny. But I've never seen this transmission hunting for gears. Darn smart transmission I guess.
I think you should consult the manual for your truck. There are some models and years where they say to not tow in overdrive. Mine says overdrive is fine.
I use cruise, also, and used to leave it in cruise on the highway all the time. Now, when approaching a long hill I'll kick off the cruise and let the truck slow some and use less diesel. Cruise will hold the speed at the expense of mileage.
This is just how I do it. There's probably a number of good answers.
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Steve Reigle (pronounced Regal)
Fulltiming since 3/21/03
'03 3295RK
'05 Ford F250 SD Lariat CC SB 6.0L PSD/TS FX4 4x4
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