Oil is not uncommon on the intercooler hoses, remove & clean up & all will be fine for a few years then do it again.
Provent 200 catch cans are the popular choice with these engines.
http://www.ausjeepoffroad.com/forum/...hlight=provent
The original turbo inlet hose (elephant hose) with the orange seal at the turbo was prone to leaking oil onto the swirl motor causing its failure, the updated part number is 53013672AE.
This is about the cheapest you will find one
http://www.ebay.com.au/itm/JEEP-GRAN...wAAOSwL7VWp3OI
These PDF's shows how to replace the Serpentine belt & alternator, they also shows how to remove the hoses (required to replace the belt). Intercooler is easier to remove then the belt. Pop the grill & then a few bolts.
http://www.chirpz.com/jeeps/belt.pdf
http://www.chirpz.com/jeeps/Alternator.pdf