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Auxiliary Transmsission Coolers Save a Lot of Transmissions..

March 12th, 2009

An auxiliary transmission cooler is an add on automatic transmission cooler which adds extra cooling capacity to your car or truck transmission. Perhaps the best upgrade one can do for their automatic transmission. It is a great idea if you have the original transmission in your car and want it to last longer, and in my opinion a must install item anytime you have to replace your transmission.

Good transmission preventive maintenance is the only thing better than an add on auxiliary cooler in terms of transmission life. Most importantly if you have a commercial work truck or live in Florida, like I do, it is almost a no brainer. As mentioned in “The Truth about Front Pump Leaks”, heat was the culprit. Not having seen his vehicle or knowing much about it’s condition, it is a good bet that the appropriate transmission cooler for that vehicle would have prevented that problem.

BTW, Ford trucks in particular have built in transmission cooling system problems. Usually we see the problem in the F-350 truck with the E4OD series automatic transmissions in the heavy duty trucks that are doing heavy commercial work. Often it starts with a leaky front seal and usually a major failure due the heat and loss of automatic transmission fluid.

Note: Automatic transmissions cool through a separate cooling tank built in to the vehicles radiator. It is not visible unless you have a trained eye. The cooling process starts with transmission fluid traveling through steel lines about 3/8 th of an inch inner diameter that go straight to the transmission cooler tank in the radiator. There are two lines, one that delivers fluid to the cooler tank in the radiator and one that returns fluid to the tranny.

The built in problem is as such. Under a load or heavy driving conditions like pulling a horse trailer or boat, the amount of pressure the automatic transmission pump generates increases. This increase causes the automatic transmission fluid to back-up or slow down where the 3/8″ cooler line tubing meets the smaller 5/16 “ cooler line tubing in the factory radiators (built-in) transmission cooler.

There is a solution for this. I will present it in the next GotTransmissions.com Blog on March 14th. See what else may interest you about transmissions and enjoy our blog.

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12 Responses to “Auxiliary Transmsission Coolers Save a Lot of Transmissions..”

  1. [...] talk about coolers and cooler installations in general. First off some vehicles come with add on auxiliary automatic transmission coolers from the factory. Yes, they are noticeably better in terms of improving your automatic transmission [...]

  2. [...] fluids or oils trying to save money who learned the lesson the expensive way. Using auxiliary external cooling is a wonderful compliment or upgrade for getting max life out of you [...]

  3. [...] Heat is one of the top two reasons for transmission failures. The other reason has been talked about over and over in this blog, lack of maintenance and not using the proper transmission fluids. No need to beat the subject of transmission care. If you don’t take care of your transmission and the fluid becomes burnt, you might as well put a fork in it, it will be well done by then. That would be a great time to call GotTransmissions.com at 1-877-268-0664 and start to ask questions. [...]

  4. [...] that can be performed to increase the strength and life of your rebuilt transmission. Obviously an auxiliary automatic transmission cooler is a popular and effective [...]

  5. [...] is an explanation of what is wrong with the stock Ford radiator and why it causes so much unhappiness. A built in flaw, that is very correctable using the cooler [...]

  6. [...] is an excellent time to install or have installed by a reputable transmission shop an auxiliary external transmission cooler. It is cheap and effective at keeping your new transmission running [...]

  7. [...] upgrades such as an auxiliary transmission cooler are not invasive and easy to perform, either at home if you have a mechanical touch or by a [...]

  8. [...] freeze can be spilled if you put an auxiliary transmission cooler on your car, or if you change out your radiator. Obviously servicing the cooling system can leave a [...]

  9. [...] is very hot, therefore GotTransmissions.com blog has in a past posted the need for an auxiliary external transmission cooler in a hot area of the country. Conversely, if you live in Minnesota, your primary need would be to [...]

  10. [...] one of the most effective tools or upgrades for the E4OD and 4R100 transmissions was to install an auxiliary transmission cooler. The cooler, along with the proper updates produced on heck of a durable, reliable transmission. [...]

  11. shelby says:

    an auxiliary cooler is definitely a necessary thing to have hear in FL. It will cut down the amount of transmission service you have to have on your vehicle.

  12. [...] Other than asking questions about what needs our customers have and discussing different choices, before a customer could ask, we would go into the shop and show them their worn out transmission and the parts. Then we showed them new replacement parts and explained why they needed replacement, usually one look makes it obvious. the last really critical thing that has to be done, not matter who installs your rebuilt transmission is flush out the cooler section of the radiator. [...]

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