Good Sam Club Open Roads Forum: Tow Vehicles: 2016 F250 tranny
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 > 2016 F250 tranny

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Sportsmen

Houston, Texas, USA

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Posted: 03/10/19 04:49am Link  |  Quote  |  Print  |  Notify Moderator

Still trying to figure out the 6 speed in my new to me 2016 F250 gasser. I put it in tow/haul mode but the engine is only turning 1500 rpm at 60 mph which causes lots of downshifting on overpasses, etc. I think I figured out you can lock out 5th and 6th gears using the electronic shift control on the gear shift lever.
I am interested in what others are doing to maintain a little higher rpm to eliminate a lot of downshifts.
My old truck only had a 4 speed tranny and locking out the O/D the engine would run around 2300 RPM at 60 mph which eliminated a lot of downshifts.

Thoughts ??


2016 Jayco Jay Flight 27BHS 6210 empty, 8200 GVW
2016 F250 CC 6.2L(gas) 3:73 diff (3157lb. payload)

lmpres

New Hampshire

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Posted: 03/10/19 04:58am Link  |  Quote  |  Print  |  Notify Moderator

I had a 2012 f250 which I believe had the same tranny. It was always downshifting and screaming high rpm's when towing. I used to get concerned on some of the long incline's I pulled on. Bought a 2017 diesel dually f350 and found it a totally different pulling experience.....

MFL

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Posted: 03/10/19 05:58am Link  |  Quote  |  Print  |  Notify Moderator

You don't say how heavy you are towing, but yes, lock out 6th, use tow/haul. If you are towing more than 10K, and have lots of hills, or wind is an issue, you may want to lock out 5th as well.

If you don;t lug the engine, your mileage may even improve.

Jerry





Dave H M

IL

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Posted: 03/10/19 06:16am Link  |  Quote  |  Print  |  Notify Moderator

It sounds like you have the 3.73 diffy. I have a 2012 with the 4.30 diffy.

pends on what you are pulling, but i seldom use tow haul on the road since the thing is continually going nutso under the hood/ downshifting constantly.

yeah, yeah, I know it is spose to to that. [emoticon]

I just prefer for me and that thing under the hood to have a little more relaxed atmosphere.

Some folks prefer to just let her rip tader chip.

Oh and prepare yourself for all the diesel folks to take the opportunity to bash a gasser.

If you are pulling any kind of weight at all and have the 3.73 diffy you probably will enjoy the ride more if you lock out 6th.

Sportsmen

Houston, Texas, USA

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Posted: 03/10/19 07:15am Link  |  Quote  |  Print  |  Notify Moderator

Thanks for the replies . I have the 3:73 diff and am towing a 27 foot trailer weighing 6800 lbs.

My other truck was an 07 F150 5.4l 3:55 diff. With the O/D switched off that truck towing the same trailer rarely downshifted between Houston and San Antonio on I10.


I will lock out 6th on my next trip and see if that settles things down. The constant upshifts are annoying, especially when the old 5.4L did not do that....

Lwiddis

Hearst San Simeon State Park

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Posted: 03/10/19 08:09am Link  |  Quote  |  Print  |  Notify Moderator

I watch the tachometer and shift manually.


Winnebago 2101DS TT & 2019 Chevy Silverado 1500 LTZ Z71, 300 watts solar-parallel & MPPT, Trojan T-125s. TALL pole for flags. Prefer USFS, COE, BLM, NPS, TVA, USF&WS, state & county camps. Bicyclist! 14 year Army vet - 11B40 then 11A - (MOS 1542 & 1560)


2003silverado

Michigan

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Posted: 03/10/19 08:18am Link  |  Quote  |  Print  |  Notify Moderator

Both 5th and 6th gears in your new truck are overdrive gears. The transmission in your new truck doesn't have a "direct" gear with a 1:1 ratio like 3rd gear is your last truck. 4th gear in your new truck has a ratio of 1.15:1 so that multiplies torque more than 3rd in your last truck. However, with the increased power of your new truck, 5th gear might allow you to have the same performance as your last truck in 3rd.

One point though...even with the more powerful engine in your new truck, some of that will be eaten up by the heavier weight of the Superduty vs the f150. Also the 6r140 transmission will have more parasitic power loss than the 4r70w transmission in your f150. Finally, if the f250 has larger diameter tires than the f150 that too will effectively reduce your final drive ratio.

Me Again

Sunbird(Wa)/snowbird(Az)

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Posted: 03/10/19 08:25am Link  |  Quote  |  Print  |  Notify Moderator

The more gears one has the more it is going to shift to be in the right gear. Coming are the 8 and 10 speeds to "shift city"


2015 RAM 3500 CC SB SRW Our Rig New 2017 Bighorn 3575el. Commuter trailer 2019 Laredo 225MK. Retired and enjoying it!


danrclem

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Posted: 03/10/19 09:04am Link  |  Quote  |  Print  |  Notify Moderator

You can set it so you can shift it yourself manually.

SidecarFlip

SE Michigan

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Posted: 03/10/19 10:01am Link  |  Quote  |  Print  |  Notify Moderator

My only issue with the new slush boxes and all that 'shifting' is heat. When the clutch packs unlock and relock, heat is produced with every change. Slushboxes don't like heat no matter what year they are.

heat kills slush boxes, always has.


2015 Backpack SS1500
1997 Ford 7.3 OBS 4x4 CC LB

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