Tow/haul mode
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Joined: Oct 2005
Posts: 563
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From: Garner, NC
Tow/haul mode
We're soon to head for Disney with the travel trailer. Got the '05 6.0 about ready to go. Does tow/haul mode only affect shift points in acceleration and downshift points to enhance engine braking?
I guess my main question is,"Does it matter if I'm in tow/haul mode or not when on the open highway?" Once we hit I-95 in Selma,NC, it's interstate driving to Daytona. If I stay in tow/haul mode, does affect fuel mileage any? If I'm not, will it work the transmission more? Just curious.
I guess my main question is,"Does it matter if I'm in tow/haul mode or not when on the open highway?" Once we hit I-95 in Selma,NC, it's interstate driving to Daytona. If I stay in tow/haul mode, does affect fuel mileage any? If I'm not, will it work the transmission more? Just curious.
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Joined: Feb 2004
Posts: 438
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From: Ormond Beach
It will lock the tranny into a gear to help keep the shifting to a minimum. The tow haul mode - according to the owners manual will not affect the final drive gear and all gears will be available.
I live in the Daytona area and when I pull my boat - after a while the truck will drop into OD so I use the two haul mode even in flat Florida.
BTW - I have an EGT guage and have noticed that my truck runs a bit cooler in tow/haul. But then I am running 35's and not the stock 265's.
I live in the Daytona area and when I pull my boat - after a while the truck will drop into OD so I use the two haul mode even in flat Florida.
BTW - I have an EGT guage and have noticed that my truck runs a bit cooler in tow/haul. But then I am running 35's and not the stock 265's.
Posting Guru
Joined: Jan 2004
Posts: 1,185
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From: Tennessee
I pull with Tow/Haul anytime I am pulling especially with the loads I haul every weekend it saves the brakes especially coming off grades. I will be heading down to the Kissimee/Orlando Area end of February to a huge machinery auction and will more than likely be hauling some heavy equipment back. I am looking forward to see how the truck does with about 20K behind it. Depends on how much we plan to buy whether I take the Dodge 3500 or not. If we have to take the 45 foot flatbed down unfortunately I will be forced to pull with the cummins because I don;t have a gooseneck hitch. But, in short depending on your load it may or may not be necessary to pull in T/H mode. What kinda weight are you pulling in pounds?
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Joined: Oct 2005
Posts: 563
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From: Garner, NC
The travel trailer is a 30 footer weighing about 7500lbs. loaded with all our stuff. The other thing is it pulls like a parachute seeing how it's about 10-11 ft. tall. Of course this is no sweat for the 6.0. My former '01 7.3 would hold a nice 70-75 mph on the interstate no problem.
My only curiousity is: seeing how it's about 650 miles one way, I do plan on running 70-75 mph speed limit allowing. If there's no difference in top gear performance with tow/haul, that's how we'll run in case some jackleg out there on the cell phone decides to exit at the last second right in front of me.
Believe me, I know I'm not conserving too much fuel at those speeds, but if switching off tow/haul uses less fuel, I'd run that way and just run the guy over.
My only curiousity is: seeing how it's about 650 miles one way, I do plan on running 70-75 mph speed limit allowing. If there's no difference in top gear performance with tow/haul, that's how we'll run in case some jackleg out there on the cell phone decides to exit at the last second right in front of me.
Believe me, I know I'm not conserving too much fuel at those speeds, but if switching off tow/haul uses less fuel, I'd run that way and just run the guy over.
"Mifflin Clay"
Joined: Jul 2005
Posts: 3,177
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From: Mifflin, PA
I turn the T/H on when I see a good slope comming up, usually just as I hit the bottom. Otherwise, I leave it off unless I want the braking on the downside. If it's a small slope where I don't slow down more that 5 -10 mph without downshifting I leave it off. If I think it's going to downshift, I hit T/H.
I have a tendancy to hold steady or slowly increase throttle somewhat as i hit an upgrade, but let some speed bleed off without downshifting. Takes some practice, but you get where you can judge it pretty good. Tends to keep you in the highest gear at the higher rpm without downshifting.
If I find a sequence that works better, I'll change. Right now pulling a 7000+ # brick, it works quite well.
I have a tendancy to hold steady or slowly increase throttle somewhat as i hit an upgrade, but let some speed bleed off without downshifting. Takes some practice, but you get where you can judge it pretty good. Tends to keep you in the highest gear at the higher rpm without downshifting.
If I find a sequence that works better, I'll change. Right now pulling a 7000+ # brick, it works quite well.
