As ronjenx said, ALL JK's have a tranny cooler made into the lower condenser, this is not nearly as efficient as an auxillary cooler. Don't rely on the stock tranny cooler to do the job, because IT WILL NOT. The JK optional tranny cooler retails in the $300 +- range, plus labor to install. I doubt if Jeep is installing these as stock equipment on the '10 models, but anything is possible. Yes the JK's 07-09 have a external tranny cooler, but any type of auxillary cooler will be mounted seperately in front of the radiator and condenser....

 

I have a 2010 and it did not come with an auxillary cooler, just the one built into the radiator. I added a B&M cooler to be on the safe side. The warm coolent comes from the transmission into the radiator cooler and then into the B&M. This route provides the greates cooling.

 

I think you need to do a little more homework on how the transmission cooling system works.

 

Care to quickly educate us all? Thank you!

 

Well, OK.

The transmission cooler isn't built into the radiator. It stands in front of it. (Assuming the 2010 is the same as the '07-'09 JKs)

There is no warm coolant coming from the transmission to the radiator cooler. It's transmission fluid, and it goes to the transmission cooler.

 

So, they way I read the post you responded to it goes like this:


Hot fluid in Transmission ->hot fluid goes to tranny cooler on radiator->warm fluid goes to aux tranny cooler -> cool fluid goes back to tranny?

 

Here's a link to a picture of what I'm describing: http://auto.howstuffworks.com/auto-p...n-coolers1.htm

 

Fluid comes from transmission, to stock cooler (in front of the engine's radiator), to the additional cooler, then back to the transmission.
I believe those who have installed an additional cooler have said the fluid should enter the additional cooler at the bottom fitting, and exit from the top fitting.

 

Here's the picture:

I think the picture is layed out to make it easier to see how the system works..

The fluid should enter the new cooler from the bottom for the best cooling..But they will work either way.

 

I looked at mine today and yes it is a separate trans cooler not associatied with the ac condensor. I understand the thought of 2 coolers but will have to see what temps I am running with what I have first before creating overkill.