tranny temps
Junior User
Joined: Sep 2006
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For an automatic trans 4D100 superduty trans 180-200 is normal depends on weather outside hot humid or cold ? and transmission load are you hauling anything? do you have a trans cooler should have one from factory.
Junior User
Joined: Sep 2006
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What year is it and how many miles on it? I have an 2001 f-250 sd I've changed my trans oil 5 times once a year and my oil when towing a boat or trailer runs 170-190 no problems as of yet. the factory cooler is ok not to worry about it if in the winter the trans oil is still 180-190 check the temp sensor for being faulty you can get a lazer thermometer pretty cheap or borrow one and when the temp is 170-190 point it at the trans and read the reading to see how accurate the sending unit is if the same I'd just drive it if the oil was to hot the p.c.m (power train module) would trigger the engine light or trans light if equipped
Posting Guru
Joined: Jul 2003
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Originally Posted by schmity
What is safe?
Junior User
Joined: Jul 2006
Posts: 87
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From: South Central, PA
Is the 6.0L cooler larger, providing more surface area for heat transfer and how easy is it to change from the stock cooler to a 6.0L cooler? Will it mount up the same or are modifications needed?
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Senior User
Joined: Dec 2005
Posts: 133
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Originally Posted by Casey
Ford specs are 220°F maximum for long term, and 250°F for short term, like no more than 1/2 hour. These are from a guy that designed the cooling system and posts on another site that I read.
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Brett Foote
Senior User
Joined: Mar 2005
Posts: 360
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From: Mount Vernon, Washington
Mine was running consistently 190-200 without load. I changed the fluid, filter and installed a V10 tranny cooler. Now I'm lucky to break 150 unloaded. Just another option for you to look at. A local respected deisel shop is using the V10 cooler with great results.
Marty
Marty
Post Fiend
Joined: Jun 2006
Posts: 5,497
Likes: 7
From: Central, Al
I am completely stock on that end for now and I watched those temps this summer. Interstate driving unloaded i would see 165 -175, in town stop and go it would climb to 185 or so. abient temp was in the upper 90's
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
Originally Posted by PA_Ford_Man
Is the 6.0L cooler larger, providing more surface area for heat transfer and how easy is it to change from the stock cooler to a 6.0L cooler? Will it mount up the same or are modifications needed?
Elder User
Joined: Sep 2004
Posts: 851
Likes: 0
From: N. Georgia
Originally Posted by schmity
I was watching tranny temps with autoenginuity...got to 190* at one point. What is safe?
Joe
Post Fiend
Joined: Sep 2006
Posts: 7,426
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From: Sioux Falls, SD
Originally Posted by schmity
Is this the general consensus?
Normally you should see tranny temps 70-80 degrees above outside air temps, thats unloaded/not towing. Around town (stop & go traffic) will be a bit higher.
Towing is another matter. 190-200 while towing is fine. If you decide to add a larger tranny cooler you will see about a 40 degree drop in temps while towing. I added the larger cooler because I live in SW Oklahoma and the 110 degree outside temps made it for a miserable summer. With the larger cooler, hot outside air temps, and pulling a 10,000 lb 5th wheeler I was hitting 190 degrees.
Post Fiend
Joined: Sep 2006
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From: Sioux Falls, SD
Originally Posted by 62trvler
Tell me more about this V10 cooler. Has anyone else installed one and are they a direct bolt in?
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