Towing numbers ok ????
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Senior User
Joined: Feb 2009
Posts: 136
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From: Florida westcoast
Towing numbers ok ????
Just made my first long tow with a new boat.
Boat and trailer loaded = 10,000lbs
DPtuner in 60 Tow setting.
Overdrive off. Cruise control on at 60mph.
Air temp 87-90degrees.
Flat terrain.
Average eGT = 950-1000. (seems high to me)
Tranny temp started around 180, worked up to 195-200. Never over 200 but again seems high.
Any thoughts/recommendations? I think I'll add another tranny cooler Inline.
Thanks
Charlie
Boat and trailer loaded = 10,000lbs
DPtuner in 60 Tow setting.
Overdrive off. Cruise control on at 60mph.
Air temp 87-90degrees.
Flat terrain.
Average eGT = 950-1000. (seems high to me)
Tranny temp started around 180, worked up to 195-200. Never over 200 but again seems high.
Any thoughts/recommendations? I think I'll add another tranny cooler Inline.
Thanks
Charlie
Cargo Master
Joined: Jan 2001
Posts: 2,726
Likes: 5
From: Slatington, PA
Towing in OD on flat terrain is ok. Its when the trans starts hunting between 3rd and 4th that you want to lock out OD.
The trans temps will go up if you get stuck doing any city driving. 7000lbs behind me had the trans temps up to 220 till I got back on open road again. A 6.0 cooler wouldn't be a bad idea.
The trans temps will go up if you get stuck doing any city driving. 7000lbs behind me had the trans temps up to 220 till I got back on open road again. A 6.0 cooler wouldn't be a bad idea.
still plays with trucks
Joined: Mar 2004
Posts: 1,743
Likes: 3
From: Twin Falls Idaho
what RPM are you at? low RPM=high EGT. when I tow, I try to keep it around 22-2500 RPM. of course my trailer alone weighs over 18K. but seriously raise the rpm alittle, I think you'll see the EGTs go down
Barney
Barney
Lead Driver
Joined: Feb 2000
Posts: 5,374
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From: Palm Bay, Florida
Frank, Wouldn't he have the radiator with the built in cooler?? and the small factory external cooler?? if so he shouldn't add a 3rd cooler......
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Molon Labe
Joined: Dec 2006
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From: Alaska
Even with my tru cool I was running 200 on a 100 degree day pulling nothing.
If your at or under 200 pulling a load, I wouldn't worry at all.
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Cargo Master
Joined: Jan 2001
Posts: 2,726
Likes: 5
From: Slatington, PA
Do the ex's come with 4.10's or 3.73's? Frank probably has the lower numbers with the 4.10's in the dually so thats more RPM's at the same speed.
The small factory one would get replaced with the larger one from the 6.0's
The small factory one would get replaced with the larger one from the 6.0's
Tuned
Joined: Jan 2004
Posts: 419
Likes: 1
From: Jamestown, TN
Just made my first long tow with a new boat.
Boat and trailer loaded = 10,000lbs
DPtuner in 60 Tow setting.
Overdrive off. Cruise control on at 60mph.
Air temp 87-90degrees.
Flat terrain.
Average eGT = 950-1000. (seems high to me)
Tranny temp started around 180, worked up to 195-200. Never over 200 but again seems high.
Any thoughts/recommendations? I think I'll add another tranny cooler Inline.
Thanks
Charlie
Boat and trailer loaded = 10,000lbs
DPtuner in 60 Tow setting.
Overdrive off. Cruise control on at 60mph.
Air temp 87-90degrees.
Flat terrain.
Average eGT = 950-1000. (seems high to me)
Tranny temp started around 180, worked up to 195-200. Never over 200 but again seems high.
Any thoughts/recommendations? I think I'll add another tranny cooler Inline.
Thanks
Charlie
It was 95*. I have a 6.0 tranny cooler and never got over 180* on the tranny fluid.
Pulling the camper from Nashville to St. George Island, FL in May the temps were 90-95. Tranny never got over 170. I pull with OD. Cruise set at 60MPH (I try to save bucks driving slower) my EGT's never get above 600* @ 1700 RPM.
Get the 6.0 tranny cooler. I have a 31 row. It will save you from losing the tranny that you have now.
Check your up pipes for leaks. My EGT's were higher before I put on the bellowed uppies. Also check for boost leaks on your air cooler and pipes.
Thread Starter
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Senior User
Joined: Feb 2009
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From: Florida westcoast
Thanks for all the replies.
I believe I have the 3.73 gears.
And I had to remove the stock tranny cooler to install the larger IC. So I just have the Tru-Cool 40k btu on there.
I'll check everything for leaks. I guess with a 10-11,000lb boat and a full excursion, it did ok.
C
I believe I have the 3.73 gears.
And I had to remove the stock tranny cooler to install the larger IC. So I just have the Tru-Cool 40k btu on there.
I'll check everything for leaks. I guess with a 10-11,000lb boat and a full excursion, it did ok.
C
Lead Driver
Joined: Sep 2010
Posts: 7,793
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You, pre-turbo or post turbo, with your egt probe? I see those number unloaded, flat on the freeway
Junior User
Joined: Jul 2008
Posts: 78
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Well, lot of things you CAN do, but IMO your numbers are just fine. I wouldn't worry about it unless you just wanna spend the dough. One thing you should consider is towing in OD. Only time I jump out of OD is when ascending significant grades, of which I have many where I tow.....but I am in OD most of the time. I don't often use CC because it is tied into my TC lock-up and exhaust brake. I'm usually on back roads rather than freeways, so CC not real practical anyway. If and when you start towing on significant grades, go to the 6.0 cooler.
Tuned
Joined: Jan 2004
Posts: 419
Likes: 1
From: Jamestown, TN
On flat ground @ 60 MPH, I was in the 600 range. Creep up to 900 on some of the inclines around Dothan AL.
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