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Old 08-02-2012, 02:44 AM   #1
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To O/D or not to O/D

New to towing and driving with a higher RPM just sounds so....different. Just wanted to ask opinions of whether or not people tow with the overdrive feature turned on or off. I have a 2010 F150 5.4L V.8.....so the "overdrive" is actually a "Tow/Haul" button on the side of the gear shift lever.

Brought a 26RLS home last weekend from the mountains for the first time and I had the "tow/haul" feature engaged (overdrive off) the entire trip home.

Thanks for your thoughts.
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Old 08-02-2012, 04:11 AM   #2
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Unless cruising on a level flat interstate-like highway, my overdrive is off. But the important thing is to keep your engine from lugging down when pulling hard, as in up a hill. The rpms must stay up in a "normal" range. Lugging down can do severe damage to your engine, particularly to the crankshaft. Thus, just try to listen to your engine, and turn tow/haul off and on as changing conditions warrant. Think of it this way - in riding a bicycle, would you want to go up a steep hill in high gear, or would you downshift to be easier on your legs ? Hope this helps.
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Old 08-02-2012, 07:35 AM   #3
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I put the truck on Tow/Haul mode and drive. If I need more power to go up a hill I step on the gas a bit more.
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Old 08-02-2012, 07:37 AM   #4
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i always tow with OD off, then again im pulling with a 6cyl suv.
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Old 08-02-2012, 07:43 AM   #5
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I always tow with overdrive OFF.
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Old 08-02-2012, 07:52 AM   #6
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Quote:
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I always tow with overdrive OFF.
I've always followed the advise of my RV dealer and tow in "tow/haul" mode. I'm also guessing GM included it in the tow package for a reason.
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Old 08-02-2012, 08:12 AM   #7
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O/d and tow/haul are not the same things on the newer Fords. If you have the factory tow package, it also integrates the computer antisway controls, as well as adjusts the shift points. We have towed well over 29k miles towing and always have it enabled.
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Old 08-02-2012, 08:54 AM   #8
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Quote:
Originally Posted by OurJayco View Post
I always tow with overdrive OFF.
X2
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Old 08-02-2012, 09:21 AM   #9
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Quote:
Originally Posted by Rockypointers View Post
snip....... I have a 2010 F150 5.4L V.8.....so the "overdrive" is actually a "Tow/Haul" button on the side of the gear shift lever.........snip
Check your F150's owners manual to confirm the actual function of "your" Tow/Haul feature. In the case of the Tow/Haul feature on my GM TV, when engaged it will add about 500 rpm to the top of each gear before shifting to the next gear. I do know that there are some Tow/Haul systems tied in to the overdrive gear, but check your manual.

If you find that your transmission is "searching" for gears often, then it's best not to tow in overdrive.

If your F150 5.4L drivetrain's Tow/Haul is strictly for adding RPM to the gear shifting range , IMO always tow with it engaged.

Also, most gas engines will produce some RPM's (within the torque curve) when towing through the mountains, especially when towing a heavy load.

Bob
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Old 08-02-2012, 09:23 AM   #10
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Quote:
Originally Posted by exthemius View Post
O/d and tow/haul are not the same things on the newer Fords. If you have the factory tow package, it also integrates the computer antisway controls, as well as adjusts the shift points. We have towed well over 29k miles towing and always have it enabled.
Exactly correct. OD and Tow/Haul modes are very different. OD is just the final drive gear and Tow/Haul again adjusts your shift points trying to maintain at least 1500 RPM so the engine and trans will not get hit when you want power and mash the gas. Also in Tow/haul mode the trans will use the engine to help slow the vehicle when coming to a stop.
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