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Old 05-16-2016, 11:05 PM   #1
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Tow in 4x4?

My TV is a 2014 F150 SuperCrew with 3.5L V6, 3.31 axle ratio. Plenty of HP, torque and towing capacity for our TT which is 6,118lb including propane tanks (if the sticker is right) empty. Question - I cannot find anywhere in the ford manuals whether it is advised or not to tow in 4x4 auto mode. I know not in standard 4x4 mode. That is for off road only per the manual but, it says using 4x4 auto is fine for everyday and freeway driving, especially in bad weather. Are there any advantages or disadvantages/issue with driving in 4x4 auto when towing the trailer? I do put it in tow mode and I have factory installed trailer brakes/tow package.
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Old 05-16-2016, 11:24 PM   #2
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My TV is a 2014 F150 SuperCrew with 3.5L V6, 3.31 axle ratio. Plenty of HP, torque and towing capacity for our TT which is 6,118lb including propane tanks (if the sticker is right) empty. Question - I cannot find anywhere in the ford manuals whether it is advised or not to tow in 4x4 auto mode. I know not in standard 4x4 mode. That is for off road only per the manual but, it says using 4x4 auto is fine for everyday and freeway driving, especially in bad weather. Are there any advantages or disadvantages/issue with driving in 4x4 auto when towing the trailer? I do put it in tow mode and I have factory installed trailer brakes/tow package.
I have the 2010 F150 Supercab with 5.4L V8 and 3.55 rear end. My manual says DO NOT DRIVE IN 4X4 MODE on dry pavement, but I don't have the "Auto Mode" option.

Do you have the Tow/Haul selector on yours? That tries to optimize shift points for towing loads.

Frankly I think you want to avoid 4x4 unless you absolutely need it, like snow or mud. I can't think of any way it would help with towing on the highway under any normal conditions. It would have to be pretty bad before I'd want to do 4x4, and if it's that bad I sure wouldn't be towing!

Roger
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Old 05-17-2016, 05:25 AM   #3
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Myself, I would just use 2wd unless the weather/roads were a little iffy. IF I remember right, using the 4wd auto does cost a little more fuel mileage, at least it seemed to with our '10 Chevy 1500. That is one feature I do wish our HD had though when driving during the winter as I did like it. Oh well!
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Old 05-17-2016, 06:14 AM   #4
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I use 4WD when i am parking my trailer, but after im able to basically maintain a straight path. I have to push it up a slight incline, and it wrecks the transmission in 2WD.

Unless you are heading out into the bush for a hunting weekend, i wouldnt use it on dry pavement.
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Old 05-17-2016, 06:40 AM   #5
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I pulled my trailer the last 250 miles in from Florida in AWD, I don't think I'd have made it otherwise. I also found myself getting down to 35 mph on the interstate a few times.
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Old 05-17-2016, 06:58 AM   #6
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I pulled my trailer the last 250 miles in from Florida in AWD, I don't think I'd have made it otherwise. I also found myself getting down to 35 mph on the interstate a few times.
Why? Florida, Interstate??? I could see using 4x4 if road conditions were bad, super wet, snowy, but if dry, I don't see the need for 4x4 at all.

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Old 05-17-2016, 07:04 AM   #7
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Unless you have a All-Wheel drive vehicle, you shouldn't run a vehicle in 4-wheel drive on dry pavement. It puts unnecessary strain and wear on drive train parts. If your truck has auto 4-wheel drive, you should put it in 2-wheel drive when weather is good and there is no chance of any slippery conditions. 4WD vehicles don't have an extra differential in the drive train that splits the power like AWD vehicles do. 4WD vehicles in 4WD put power equally to front and rear axle. AWD vehicles have a differential in the transfer case that splits the power to front and rear axles as needed and compensates the amount sent to each axle as turns are made so there is no binding in turns.
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Old 05-17-2016, 07:12 AM   #8
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1st 4x4 is NOT to be used on dry, hard pavement. AWD is a whole other system that can be used on dry, hard pavement.


IMO, if conditions are so bad that 4x4 must be engaged, one should NOT be trailering!
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Old 05-17-2016, 07:18 AM   #9
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Why? Florida, Interstate??? I could see using 4x4 if road conditions were bad, super wet, snowy, but if dry, I don't see the need for 4x4 at all.

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Solid ice and snow from around Murfreesboro, TN all the way to my home in Marion, IL.
Rest areas full, everything full, no where to pull off and stop. I was coasting over bridges, they were solid ice and saw several vehicles in the median that lost it on the bridges.
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Old 05-17-2016, 07:32 AM   #10
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Thanks for the replies. Yes, I have tow mode enabled so that it uses the different transmission shift ratios. So far that has been great. In the manual for my truck and transmission it says that 4x4 Auto is fine for everyday driving - hard pavement, freeway, city, etc. I don't normally leave it in that mode since it seems overkill. It does very specifically state that 4x4 standard (high or low) is NOT to be used for dry pavement or regular daily driving as it can damage the transmission. i think based on the replies I'll continue in 4x2 mode and reserve 4x4 Auto for maneuvering in tight spaces, bad weather driving, parking, backing up, etc.
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