Driving with tow/haul active

[BlueBayou]

Hi folks,

Question. What would be the ill effects of driving with tow/haul engaged 100% of the time? I ask because I do use it from time to time to help slow the truck down without using the brakes but my buddy said that will trash the tranny. Is he right? Should I leave it for only towing and just replace brakes more often?


Give me your thoughts and experiences! Thank you!

[Dave]

Wont hurt anything but your fuel economy.

Just engage tow haul shortly before you see that need coming on

[colo_dually]

I use tow/haul whenever I'm on the grades, regardless of how much I'm loaded with. I haven't seen any ill effects from it, and in some ways I feel the shifts are better in tow/haul and easier on the transmission.

As Dave stated, running it all the time will kill your mileage.

[BlueBayou]

thank you guys...... I know it does hurt the fuel economy but sometimes I am in city traffic and I just like that it is easier on my poor brakes. You have put my mind at ease!

[SickStroke6.0]

If you're hauling loads, use it 100% of the time. If you're not loaded, I just use it on the downhill off ramps.

[PGreenSVT]

I use it to force a downshift from od rather than lug the engine. With my injectors it gets real smokey when it lugs down in high gear.

[jordan07]

i do this alot for braking not so much when taking off right before i brake i hit it i was wondering also if there is a way to make it more aggressive instead of one gear shifting down maybe two gears ha?? i dono if there is a tune out there for like the sct's ? what u guys think?

[Galaxie]

Downshift if I dont want low RPM smoke. Downshift if I have a load and EGTs are getting up there. Thats it.