2018 SuperDuty DRW - 3.55 or 4.10 Gears?
We are close to ordering the following: 2018 XLT DRW F-350 SuperDuty Powerstroke, 4-door, 4X4 It will seldom be driven empty. It will primarily be used to haul a 4,000 lb truck camper while towi...
Forum Discussion
" I don't really know what the impact of tow/haul mode is. Will the tranny still upshift to 6th (I assume is an overdrive gear) while in tow/haul mode?
BradW "
Tow/haul mode is a wonderful thing.
Tow/haul mode stretches out the shift points when going up thru the gears, allowing the engine to rev higher before shifting up to the next gear. So it will shift into 6th - just later then if not in tow/haul mode.
Tow/haul also will shift down a gear each time you touch the brakes, assuming the computer knows that downshift will not over-rev the engine. Very nice when you tip over that mountain pass and start down.
FWIW, with my 3.73 gears, I turn about 1650-1700 revs at 60 mph. I usully tow at about 62 with absolutely no problems. Max torque comes in at 1600.
* I get the impression that you're unsure if these trucks can safely tow in 6th gear. They can - easily. Tow/haul does not inhibit that at all. You can run 55 mph in 6th all day with no problem if you want to.
I have noticed an amazing situation many times when hooked up and towing in town. If I am sitting at a red light and take my foot off the brake, the truck and trailer start moving forward - at idle speed. I've even noticed this when I am sitting on a slight upward incline - It starts chugging forward. I am just amazed this is possible.
BradW "
Tow/haul mode is a wonderful thing.
Tow/haul mode stretches out the shift points when going up thru the gears, allowing the engine to rev higher before shifting up to the next gear. So it will shift into 6th - just later then if not in tow/haul mode.
Tow/haul also will shift down a gear each time you touch the brakes, assuming the computer knows that downshift will not over-rev the engine. Very nice when you tip over that mountain pass and start down.
FWIW, with my 3.73 gears, I turn about 1650-1700 revs at 60 mph. I usully tow at about 62 with absolutely no problems. Max torque comes in at 1600.
* I get the impression that you're unsure if these trucks can safely tow in 6th gear. They can - easily. Tow/haul does not inhibit that at all. You can run 55 mph in 6th all day with no problem if you want to.
I have noticed an amazing situation many times when hooked up and towing in town. If I am sitting at a red light and take my foot off the brake, the truck and trailer start moving forward - at idle speed. I've even noticed this when I am sitting on a slight upward incline - It starts chugging forward. I am just amazed this is possible.
