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Old 08-24-2019, 06:41 AM   #1
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2016 25' Flying Cloud
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Have you replaced your transmission cooler? ...or added one?

My F-150 has a factory-installed transmission cooler, but I wonder if it is adequate. Occasionally the transmission temperature goes above 20dF when towing. So three questions:
(1) How hot is too hot?
(2) Have you replaced your existing transmission cooler, or added one if one wasn't already installed? Which brand and type did you choose?
(3) How effective is the one you installed?

Thanks, all.
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Old 08-24-2019, 07:32 AM   #2
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Ck your owners manual...

Our Burb will go into 'limp mode' when the trans temp is sustained at around 260*F.

Normal towing for us is 150-200mts.
125 w/o the AS

I did install an aftermarket cooler in our 95 Burb.

The 454 ran a bit hotter and the cooler did help a lot.
In our colder climate it's important to have a fluid by-pass to allow for quicker warm-up in low temps.

Bob
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Old 08-24-2019, 07:58 AM   #3
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When I had similar questions, I did a Google search using transmission cooler Airstream and found many threads on the subject. One of the better ones I had come across was this thread:


http://www.airforums.com/forums/f463...des-51433.html


I found it useful because it not only showed the comparison, but some observations that went on for several years post install.
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Old 08-24-2019, 09:48 AM   #4
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F150 Transmission Temperatures

Bob,

I have a 2012 Ecoboost F150 that I pull an AS 2019 Globetrotter 27 FB. Towing temperature for the transmission is 190-200 degrees. It will go higher pulling a pass but never approaches the yellow or red caution zones on the factory gauge.

Consult you factory owner's manual or discuss with your Ford service folks. My dealer showed me where the first transmission service is at 150K miles or if there is a problem. You will also find no dipstick or drain plug, its a sealed system.

Unless your having an issue, you should be fine.

Gary W.
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Old 08-24-2019, 11:16 AM   #5
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I have a 2016 F150 4X4 with 3.5 Eco Boost pulling a 2019 27 ft Globetrotter. I have never had any indication of higher temperatures. Dave W
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Old 08-24-2019, 02:00 PM   #6
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I used to use one of these https://trucool.com/products when I was towing my 25 with a 4.7L Jeep GC. I liked it because the oil would by-pass the cooler in winter but would flow at full blast the hotter it got. It really did the job well. Jim
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Old 08-24-2019, 07:50 PM   #7
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I just went through this with my truck. 05í Sierra with factory aux cooler would stay around 190-200 towing, creep up to 210 in the hills in hot days. I changed that out to a Hayden unit twice the size. Definitely keeps it cooler not towing, around 150-175, but towing in the hills it still went to 200. Not worth the hassle if you ask me. If I bypassed the radiator cooler it might work better.
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Old 08-24-2019, 08:17 PM   #8
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Quote:
Originally Posted by cliffcharb View Post
I just went through this with my truck. 05í Sierra with factory aux cooler would stay around 190-200 towing, creep up to 210 in the hills in hot days. I changed that out to a Hayden unit twice the size. Definitely keeps it cooler not towing, around 150-175, but towing in the hills it still went to 200. Not worth the hassle if you ask me. If I bypassed the radiator cooler it might work better.
Put it after the OEM rad cooler.😂

Bob
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Old 08-25-2019, 08:47 AM   #9
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Quote:
Originally Posted by ROBERT CROSS View Post
Put it after the OEM rad cooler.



Bob



This is also correct for the Trucool installation. Jim
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