Montana Owners Club - Keystone Montana 5th Wheel Forum - View Single Post

mhs4771 · 10-06-2015, 04:11 AM

I toss this in, while not a Ford, the GM version to Tow/Haul causes the Torque Converter to lock up in Lower Gears, thus limiting some slipage and helping the Tranny to run cooler. Now running Solo, it's not recommended to use Tow/Haul as it will hurt Fuel mileage, but when towing Heavy (like we are at 18K) it should help improve mileage by reducing Transmission slipage.
Now again this is how the Duramax/Allison combo functions.

10-06-2015, 04:11 AM	#11
mhs4771 Montana Master Join Date: Dec 2009 Location: Sebring Posts: 3,659 M.O.C. #9969	I toss this in, while not a Ford, the GM version to Tow/Haul causes the Torque Converter to lock up in Lower Gears, thus limiting some slipage and helping the Tranny to run cooler. Now running Solo, it's not recommended to use Tow/Haul as it will hurt Fuel mileage, but when towing Heavy (like we are at 18K) it should help improve mileage by reducing Transmission slipage. Now again this is how the Duramax/Allison combo functions. __________________ Michelle & Ann 2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.