I thought that tow/haul mode took it out of OD???? Am I mistaken?

Kevin - I shudder to think of what my MPG would do with that load!!!! Id have to pick up a night job just to afford to move it.....

No, tow/haul mode simply moves the shift points up some and keeps the converter locked longer to keep tranny temps down. It will still go into OD, just at a higher speed.

I travel and work pipeline construction... the trailer is my home and the jeep is my commuter car.... Family is in Indiana and most work is in Texas.... Safe to say I tow a LOT

My Ford Explorer overheated ONCE while towing the boat with OD off.

Dealer told me keep the OD ON - that's right - ON, doesn't make sense but won't overheat.

Well......that's what I did, and still do - OD is left ON, and I haven't had any problems since.

No issues trailering 60 miles each way whenever I fish, hills or not.

2001 Ford F150 Crew Cab w/5.4 litre 2wd...tow my v20 from SC to FL, NC, TN and anywhere else Ive ever taken the boat WITH OD on...no problem...:party:

Seems to me a 2500 HD should tow a V20 in OD w/no sweat at all...the only problem I see in yer posts is when ya got Cruise Control on...that's something I would NOT expect to work well and wouldn't do w/my truck...

My Land Rover tows with OD on, but there's a "sport" button I'm supposed to push that does just like Ferm said... moves the shift points a little higher and keeps it locked a little longer. Never had a problem with it yet. (crosses fingers). You can tell it's in sport mode though just listening to the engine.. it winds out longer before the tranny shifts.

My previous tow vehicle (1998 Jeep Cherokee Sport with a 4.0L engine) says to tow in 3rd gear.. but I always towed in OD with zero problems except for when I was in really hilly areas.. and several of those tows were to Fla and back hauling my V20. up and down Interstate 95. That Jeep has 177,000 miles on it now and needs a new head gasket, but other than that it's in great shape.

You cant even tell that there is a load on that thing. Problem is the fuel econ.....thats what Im workin on.....

pretty much the only thing that will help that is slowing down.... I had a suburban back in the day with 3.73 gears and 38" ground hawgs... it got about 11 mpg.... The auto O/D trans went bad on me and I drove it to work and back for a few weeks with only 1st and second... I drove it at 55 mph in 2nd gear and got 11 mpg ..... didn't matter if it was running 4000 rpm or 1600 rpm... same mileage

Pretty much because it takes X amount of HP to do Y amount of work. And it takes Z amount of fuel to make X amount of HP. This is why so many go out and swap to a smaller outboard to save on fuel to find out they end up using the same amount to run the same speed(but can't go as fast when the need arises to drop the hammer).

Yea but Im driving to the Keys!!!! Not the In-Laws.....Who wants to drive slow for that?!?!?!?

I noticed an increase in Econ when I dropped to 60mph but the weigh out isnt there. I was saving about 10gals but also adding another hour to the trip. Like I said, its The Keys, Im sittin on go brotha!!!!

Thanks everyone for the pointers!!!