Bump...
I have just read this thread as always interested in researching how to make my Jeep better, so I went and removed my grill to have a look at what I had. Now I'm confused. What I would like to know is what is the cooler behind the little stock transmission cooler. The tubes are the same size as the tiny stock one so I was thinking it was the "dealer fitted aux cooler" I have read about on here, however the pics I've seen seem to show something a bit smaller. This one is almost the entire width. I've had a new radiator installed 18 months ago by a shop. I have no experience with radiators so please excuse my ignorance.
In the first pic you can see the fins of the rad behind the middle cooler.
Do I have one really fat radiator that looks like it's made up of two sections and one miniscule stock trans cooler, or do I have one normal size radiator, one stock trans cooler and one giant, extra aux trans cooler in between?