After looking under my recently purchased 2006 wrangler X 4.0, i found some fluid coming from little hoses right under the radiator above the front differential. Some of the fluid leaked onto the diff cover. It does not smell like oil and is the same color as the engine coolant that is in the reservoir. The jeep is in generally good shape and i feel that this is just because of old hoses. The hoses are like half an inch and are not the main radiator hoses.
You must have an auto trans. Those hoses coming out of the bottom of the radiator are for the trans cooler. They r probably bad.
However make sure u don't have pooling of coolant at the bottom of the radiator. Look down through the cooling fan side and check if there is liquid at the bottom if the unit.
If u had a manual trans the hoses wouldn't b at the bottom like that in ur pic. The man trans has a separate cooling unit in front of the radiator.
Good luck. B careful not to strip the threads when u replace the lines.
p.s. if u have pooling at the bottom then u r probably looking at replacing the radiator. If u have to do that, get yourself a pneumatic socket wrench and compressor tank. The bottom 4 bolts will b wayyyyy easier to remove. Trust me its worth the money if u do repair work urself.
Cut the factory crimp bands off, then pull the rubber line off of the hard line. Replace with new rubber (buy hose specifically for transmission cooler, your FLAPS should have it) and use regular aviation type hose clamps. Don't over tighten, but do check them after a few days to make sure they're still snug.
I'd use a pneumatic cutoff wheel to carefully put two cuts in each band, one on either side. Then you can peel the two halfs of the band off. If you don't have a cutoff wheel, a Dremel type tool with a small cutting wheel will work.