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Old 07-31-2008, 02:27 PM   #1
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When using the tow haul I seem to get worse mileage than without it.I have been told that if you do not use it you will not have the engine breaking.Ha sanyone else noticed this.
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Old 07-31-2008, 02:27 PM   #2
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When using the tow haul I seem to get worse mileage than without it.I have been told that if you do not use it you will not have the engine breaking.Ha sanyone else noticed this.
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Old 07-31-2008, 05:56 PM   #3
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When I tow I always have it in Tow/Haul mode. You will get crisper shifts and at different intervals which is needed for towing along with the engine braking. The value definitely overrules any decrease of MPG's; if any. MOHO.
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Old 07-31-2008, 06:12 PM   #4
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I agree with K-Star, Tow/Haul works great! Smoother shifting (both up and down shifts), and really helps on the up and down hills. When we went to Yosemite we took Hwy 120 and stayed at the Yosemite Pines Rv Resort. There is a steep climb going and of course a steep drop coming back. Tow/Haul really helped in both directions.

If there is a decreased MPG while using Tow/Haul I don't care. I'd rather have the protection of the better gearing and increase the life of my truck as well as the towability of the 5er.
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Old 08-06-2008, 07:48 PM   #5
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Sure you would get lower mileage. Tow haul changes the shift points to higher revs. Means more fuel for more power. Gotta have whatcha gotta have.
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Old 10-22-2008, 09:55 AM   #6
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Quote:
Originally posted by Bruce and Jenna:
Sure you would get lower mileage. Tow haul changes the shift points to higher revs.
Means more fuel for more power. Gotta have whatcha gotta have.
This is exactly right. The difference in the shift points is what kills the mileage. And no, you will not have grade (you called it "engine") braking unless you have Tow/Haul on. Personally, on relatively flat ground, I don't use it often. Once I am in the hills, I do but mainly for the grade braking feature.
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Old 05-06-2009, 08:58 PM   #7
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Hi, what kind of RPM'S are you guy's seeing when it downshifts. Mine screams loud when it shifts down and I have see RPM's in the high 300's. How about it, seems real high to me!
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Old 08-26-2009, 08:39 PM   #8
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I only use the T/H when in hills/mountains--in relatively flat areas, I kick it out. I have a problem with my downshifting--it will only downshift after losing about 10-12 mph--if I use the shifter, it drops to 3rd and hits the 3000 range on the tach. Haven't figured this out, but it is aggravating to be tooling along at 60, start climbing and do well till the hill gets steep enough to cause a slowdown in OD, then have to lose speed before it downshifts. This is my only concern so far at 9k.
Joe
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