Maximum safe EGT and Trans temp towing - Ford Powerstroke Diesel Forum
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post #1 of 33 Old 12-21-2007, 03:57 PM Thread Starter
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Maximum safe EGT and Trans temp towing

I'm getting ready to go on a trip where I'll be towing a 7000-8000 pound trailer 1000 miles each direction, and a good bit of that will be through mountains.

When I'm going through the mountains, what EGT/trans temps should I run at continuously before backing off? I have my EGT warning set at 1250 now, but I have no clue what to set the trans warning at.


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post #2 of 33 Old 12-21-2007, 04:06 PM
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1250 is a good level.. you can go a lil higher but not for a long period of time... as far as trans i wouldnt want you to go over 200... anything about 210 and youll be burning oil....
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post #3 of 33 Old 12-21-2007, 04:06 PM
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You won't have any problems. I took a 11000lb+ trailer through Wyoming (7000-9000ft the whole bottom half of the state) and never saw much over 1100. You might get up into the 12-1300 range if you're really getting on it, but not likely. Trans never saw over 175 deg.

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post #4 of 33 Old 12-21-2007, 06:02 PM
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Good people on here telling you the truth. 1250 and 200 max on Trains.
Have a super safe trip, and a Merry Christmas.

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post #5 of 33 Old 12-21-2007, 11:59 PM
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you can run hotter than 1250 on the egt's and if you have a tuner and a trailer, you will definitely get to that temp in a hurry. 6.0 very tolerant of EGT, you can run 1350 without worrying about anything, i've run 1400* for extended periods and never done any damage at all...

mercon SP is synthetic fluid, there is no reason you need to worry about temp unless you have some sort of mechanical failure. the most you will likely see is around 160*, i've seen some get up to 175* on a HOT day pulling a big grade, and your tranny fluid will handle well over 200*, remember these arent the trannies of yesterday that would burn up at 210, you can run 250, but there is no way i see it getting that hot if everything is operating correctly.
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post #6 of 33 Old 12-22-2007, 09:18 AM
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Sorry LvTitan, but I will have to disagree with you on taking the 6.0 up to 1400. If you ran it at 1400* for a extended period of time you didn't do it any good.
I will stand by what I said about the 1250 and the 200 EGT/trans temps.

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post #7 of 33 Old 12-22-2007, 09:22 AM
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^^ i agree..I hit 1600* all the time..but I wont say I am not doing any damage somewhere.

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post #8 of 33 Old 12-22-2007, 09:45 AM
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At those temps, I'm sure your rings are screaming! I would agree keep it around 1250 and you could bump it a bit higher than 200 on the tranny, but you likely won't see that in the winter time unless something isn't working properly.

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post #9 of 33 Old 12-22-2007, 10:16 AM
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One thing to keep in mind is those are safe limits you can probobly run all day the 1250 and 200 but anything higher your longevity is thrown out the window. I would absolutely crap my pants if my gauge ever got to 250 for trans temp! lol. To each there own but to be safe keep or try to keep it 1250 and 200

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post #10 of 33 Old 12-22-2007, 04:12 PM Thread Starter
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Thanks for the info.

Now I'm a little bit worried about my trans temps. Unloaded, they run around 145-150. I picked up the flatbed today. With just the empty trailer, my trans temps were touching 175 in stop and go traffic in town. Is that normal? I'd guess the trailer weighs about 2000-2500 empty.

How long can I run higher than 1250 without hurting anything? There are some pretty steep grades I'll be pulling, so I'm sure I'll hit 1250 a few times along the way.


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