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Old 08-17-2016, 08:06 PM   #11
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Originally Posted by LiftedAWDAstro View Post
With my Tundra, I tow in 4th, manually selected and with tow/haul on. I can do 5th but it tends to unlock the torque converter which just generates heat although I don't see it on the gauge. I understand auto trannies so I won't let the truck pick an O/D gear just to sit there and let it lock/unlock the TC. I get the same mileage in 4th or 5th and in 4th, I can set the cruise and it just pulls hard all day. Engine turns 2700 rpm at 60 mph. I net 8 mpg towing 8500#, same as in 5th shifting all the time.
Mine turns around 2200 in 4th at 60mph. And you nailed it. When the torque converter locks and unlocks, or when gearing changes, heat is produced. And heat is the enemy of a transmission. That's why I drive in a lower gear all the time. Want to keep my tranny happy.

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Old 08-17-2016, 09:34 PM   #12
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I use tow /haul in my F150 leave her in Drive but definitely lock out 6th gear.

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Old 08-18-2016, 02:41 AM   #13
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If your on traveling on level ground for the most point leave it in tow mode and ride out. If your in the hills/mountains I always manually shift down to my best tow gear to take on the hill.

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Old 08-18-2016, 05:35 AM   #14
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I don't use tow haul mode at all. when I did try it, seems to shift the same and it still readily goes into overdrive. I have 496 cubic inches that like the honey badger, Don't give a sh&t.
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Old 08-18-2016, 07:56 AM   #15
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Engage the tow haul button and drive.. IF the transmission starts to hunt for a gear (shifting up and down) then drop it out of auto and down a gear till it stops hunting..
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Old 08-18-2016, 08:20 AM   #16
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2014 Ford F-250 SD 6.2 gasser. Drive and tow mode for me unless the terrain dictates otherwise. I will lock-out top gear on the rare occasion the rolling nature of the hills causes the transmission to hunt. I've never had any issues, the constant shifting just annoyes me.

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Old 08-18-2016, 08:31 AM   #17
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Originally Posted by FLASHY35 View Post
Hello all; I recently purchased a new TV. I'm looking for input on what gear others are using to pull their TT. I have a 6.0, with a 6-speed transmission. I'm pulling a 23RLSW. On my first trip, I used the tow/haul mode and drove in DRIVE with no problems. I have been told by others that I should use the manual mode with maybe a different gear. This forum has had a lot of usable information and at this time I'm just looking for others input. THANKS
I leave my Suburban 2500 6.0 with 3.73s in Tow/Haul Manual 5th gear so it won't up shift to 6th. In 6th gear there's not enough torque @ 1800rpm. I stay around 65mph @ 2200rpm, max torque is 4200rpm for me
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Old 08-18-2016, 08:37 AM   #18
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Originally Posted by Camper_bob View Post
The 6.0 with 6 spd trans is going to be a late model F-250 right?

Anyway, I drive a RAM gasser, and I always use T/H and just drop it in Drive. On occasion I have manually overridden the transmission using the manual shift selector, but by and large it does a fine job on its own.
Originally Posted by bill777x View Post
On the off chance that your 6.0 is a gas Chevrolet like mine and not a PowerStroke, I leave the tow/haul off and lock it out of 6th. It hunts back and forth too much if I let it shift to 6th and it holds gears too long in tow/haul to suit me. I'm pulling 7000lbs loaded, your trailer might not be as heavy, so try a few things and use what you like.
Per my owners manual I don't need to use tow/haul unless I'm towing at or above 75% of my GCWR and it also states to use the cruise and let the truck decide which gear to use which I do on the interstate.
By the way mine has 4.10 gears and 60 mph in 5th = 2200 rpms, I average 9mpg there.
Must've had a brain fart yesterday; a 6.0 with a 6 spd trans would be a late model GM HD gas truck.

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Old 08-18-2016, 08:48 AM   #19
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I have a 2007 Nissan Titan, pulling a White Hawk 32DSBH. Like others mentioned, put it in tow/haul mode, then drive normally. I do manually down shift when going up steep grades though. For example, going up Cajon Pass or up to Big Bear, I just drop it into 2nd and let the horsepower do the work, not the transmission.
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Old 08-18-2016, 10:05 AM   #20
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I lock it out of overdrive and go. No tow/haul mode available for my truck. SCT tuner programs the shifting. Still getting the job done with the old 2001 F-150 with 5.4!


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