I've replaced the radiator , water pump, lower hose, and still it seems to leak from what looks like the oil pan. Its all splattered on the front diff cover. Any suggestions?

 

Look closer. It's leaking from somewhere else and running to the oil pan most likely. Dry everything up, start her up for a minute, then crawl under there with a bright flashlight.

 

Check the hose between the water pump and the radiator. My friends XJ is leaking there (water pump end) and the coolant drips onto the block, runs down to the lowest point of the oil pan, then hits the ground. I second the advice above, dry the area with a rag and crawl under there to inspect where the leak may be coming from.

 

Borrow the pressure test kit from AZ, clean it, pump it up & see where it's leaking from. That way you can fix it immediately without having to stand around waiting for it to cool off.

 

Another country heard from...

Check the freeze plugs on the engine block below the exhaust manifold for leaks.