Truck and pulling a trailer question

[Craig]

On my truck ( Dodge ) on the gear shifter there is a button. with three positions.
OD off
OD on
Tow/ Haul

When pulling a trailer what is the best choice to use?

When on flat roads I have been in OD on. when going up bigger hills i switched to Tow/haul for a little extra power. Is that ok or is it up to your driving style on whet to use?

I just want to make sure I don't screw up my truck.

[rasbo]

tow haul all the time your towing

[cld40]

 

[GoldTip]

X2

[markts]

x3

[Bofire]

 :)Owners Manual
Carl

[jayrod9528]

x3

x4

[FC]

Is this a trick question?

[Sorefeet]

I agree with Bofire

Owners manual or call the dealer in your area

[FC]

For those that don't get this one, pulling a trailer is the same as towing one or hauling a heavy load....This isn't actually a trick question  

[MIKEXRAY]

I tow an enclosed trailer for work 3 days a week and I take my tow / haul button off when I'm going down the right grade hill. I hate going down hill , having the engine hold you back & having to give it gas to do 60 mph. I take it off & pretty much coast at the speed limit. I leave it on for climbing hills, flat & going down steep grade. I don't see any harm in this & It has to give you better gas mileage. One example is after I go over the pass on I-90, I take it off all the way down & have to give the truck very little gas along the way. Coasts close to the speed limit almost to Cle elum.   Mike

[bobcat]

I do the same when pulling my trailer. On downhill grades I'll let it go into overdrive. Most of the time I leave it in tow/haul, but like you said, there are times that you shouldn't have to be pushing on the gas to keep your speed up going downhill.

[JackOfAllTrades]

Question to ask... For the Dodge owner that's going to read his owners manual.

Does the Dodge automatic transmission Tow/Haul feature do the same three things that happen when engaging the same feature on the Ford transmission? Where as- In Tow/Haul mode, the transmission locks the torque converter and takes the gear out of over-drive and engages 'transmission' braking.  Most owners manuals I've read say that you should not tow, (over x amount of weight), in over-drive, as that is the weakest gear set in the transmission and the big V10's or Diesels have enough torque available that a person could damage the transmission.

I suggest that you read the owners manual.

I don't have any of this as I have a manual ZF 6spd behind my diesel. I tow in over-drive all the time until an incline makes the engine labor, then I down shift when I should. Same with decelorating down a grade, I select a gear that allows the truck/load to cruise at or very near the speed limit with just a little bit of breaking if need be.

-Steve

[Special T]

Trade that POS doge auto in and get a 6 speed stick!

[jackelope]

It doesn't matter.
Tow/Haul boosts line pressure in the trans, makes it shift later and harder, thus keeping the RPM's up so you don't lose momentum when the trans shifts and the R's drop. It's nice when you're hauling big stuff. If I remember correctly you've got a Hemi mega-cab...lots of power there...unless you're pulling a huge new boat, you can go with or without tow/haul. I towed a 21.5 Bluewater cuddy cabin boat with my 1/2 ton chev truck and 290hp and did fine without hardly ever using tow/haul.