Towing in overdrive ?
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Laughing Gas
Joined: May 2007
Posts: 1,100
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From: Davis, Ca.
Towing in overdrive ?
I was wondering what everyone thought about towing a travel trailer, 8k lbs, in overdrive while traveling on flat hiways? Is it not a good idea? Or if I watch my trans temp am I ok?
Post Fiend
Joined: Feb 2006
Posts: 11,892
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From: Middle Tennessee
As long as the TC is locked up and the tranny is not hunting, I say go for it. Keep an eye on EGTs too.
Posting Guru
Joined: Sep 2006
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From: Plainfield, IL
I usually hold it out of od till i know that I'll be above 50 mph for more than a mile then I'll let it shift it into od. I will hold it out if it hunting Also like others said. My stock trans lasted 290k of heavy towing and snowplowing.
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Laughing Gas
Joined: May 2007
Posts: 1,100
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From: Davis, Ca.
I did try it today for awhile on my way home from camping once I was out of the hills on straight flat roads. I did notice a drop of about 5 degrees on the trans. I didn't look at the egt's since the engine was only at 1900 instead of 2500 now.
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Cargo Master
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Posting Guru
Joined: Jul 2007
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From: SE Wisco
I very rarely two in D. Like they said, as long as it is not hunting for gears I let it be. If it is hunting gears I try and control it with that skinny pedal on the right before I take it out of OD.
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Laughing Gas
Joined: May 2007
Posts: 1,100
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From: Davis, Ca.
That was the rpm range I found to seem like a sweet spot also. Cruising at about 63 to 65 mph. It also seemed to almost be running easier than normal driving without a trailer.
Go Bills !
Joined: Jan 2008
Posts: 2,778
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From: Buffalo, NY
My RPM sweet spot. 2k about 67 MPH. Pulling 10k 5th wheel. In OD. On Cruise.
I will bump off cruise when i see boost gauge rising.. About 10-12psi it likes to kick out of OD and scare the crap out of us.. Want to make a mode up for that some day. Seems that 10-12psi is consistent to cause the trans to kick out of OD. My EGT will never go above 1200.
I will bump off cruise when i see boost gauge rising.. About 10-12psi it likes to kick out of OD and scare the crap out of us.. Want to make a mode up for that some day. Seems that 10-12psi is consistent to cause the trans to kick out of OD. My EGT will never go above 1200.
Postmaster
Joined: Apr 2006
Posts: 3,524
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From: CA Bay Area
As said, there is nothing wrong with towing on OD, but it doesn't mean it has to be the best way.
I did tow a trailer with a vehicle that had trip computer showing instant mpg.
Having 5 speed auto -I was playing with it being bored driving with low speed limit in CA.
On some occasions dropping a gear was bringing increase in mpg -also giving much better response when I needed it. Following tall semi could give me 15% increase, but that is tiring.
I did tow a trailer with a vehicle that had trip computer showing instant mpg.
Having 5 speed auto -I was playing with it being bored driving with low speed limit in CA.
On some occasions dropping a gear was bringing increase in mpg -also giving much better response when I needed it. Following tall semi could give me 15% increase, but that is tiring.
Lead Driver
Joined: Jan 2006
Posts: 7,308
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From: Hartford, WI
The trip computer isn't considered really accurate at all. Hence it is referred to as the "lie-o-meter"
Postmaster
Joined: Jan 2009
Posts: 2,544
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From: Suffolk, VA
That's one of the great benefits of having a custom tuner with tow tunes. It won't shift into OD until there's a certain mph that's met. I know mine won't shift to OD in my tow tunes until I get to over 55mph, and then it still won't shift into OD if I'm still accelerating or have a significant load on the TPS, such as pulling a small grade. Very nice.