Adding stand alone trans cooler, Anyone done this? - Ford Powerstroke Diesel Forum
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Old 11-17-2013, 10:16 AM
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Adding stand alone trans cooler, Anyone done this?

Im in the process of signing the final paperwork on a big RV trailer, goosneck , my question is about the trans, I have never had any problems with mine but the converter, i replaced with a billet converter last year, I have 175k on the clock and looking to keep it going longer, I have added a external trans filter , i was looking how easy it would be to add a massive cooler to it and bypass my cooler built into the radiator. this way it will help keep all that cool and get my trans lower on temp by running a stand alone,

1. anyone see any reason why i can't or should not do that?
2. is the stock trans fluid pump good enough to do this? if not do i need at add another one in line?
3. what is the lowest recommended temp to run the trans at.
4. what is the max temp?

thanks everyone.
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Old 11-18-2013, 02:39 PM
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That's a good question I am interested as well , I tow a 40 ft toy hauler


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Old 11-18-2013, 02:45 PM
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well when I get back from overseas I'm going to order a big cooler and temp controlled switch , I'm going to put it threw its paces and see how it turned out, ill start by towing my trailer for 30 min down the highway log temps, then do the swap and log temps, if I see a decrease in temp then ill know it works then ill dial in the temp by using a temp switch hooked to a fan, for the first solo run fan will be on all the time,
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Old 11-18-2013, 02:50 PM
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Ive always threatened to get one of those fancy tranny fans with the fins on them. But after a long tow this summer I found the tranny temps to never be a issue.
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Old 11-21-2013, 08:07 AM
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Quote:
Originally Posted by rabbitCTSV View Post
Im in the process of signing the final paperwork on a big RV trailer, goosneck , my question is about the trans, I have never had any problems with mine but the converter, i replaced with a billet converter last year, I have 175k on the clock and looking to keep it going longer, I have added a external trans filter , i was looking how easy it would be to add a massive cooler to it and bypass my cooler built into the radiator. this way it will help keep all that cool and get my trans lower on temp by running a stand alone,

1. anyone see any reason why i can't or should not do that?
2. is the stock trans fluid pump good enough to do this? if not do i need at add another one in line?
3. what is the lowest recommended temp to run the trans at.
4. what is the max temp?

thanks everyone.
Yep did this awhile back here is the write up, hope it helps

HEAVY DUTY TRANS COOLER INSTALL
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Old 11-21-2013, 09:44 AM
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the transmission has an internal thermostatically controlled valve that will only sip fluid exterior to it until an operating temperature of 165* is achieved... at what point it is fully open.. it will flutter in attempts to maintain that temperature...

this chart is good info as to what you should expect when discussing temperature vs. life:



adding an exterior cooling plate adds both volume and exchange surface (duh), but it also will add years of life to your transmission... Heat is the enemy.. that said, too cool is an enemy too, not to parts or clutch surfaces, but to quality of shifts.. it will shift hard... shifting hard isn't bad for the transmission, either, but it is bad to folks who think there is something wrong and break it open to find out what... idiots working inside a piece of machinery above their station are enemy #1 to a transmissions longevity.
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