Welcome to the Jeep diesel world; read the NOB guide if you have not already.
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=54207Study and read the posts on this forum, most any question you can have is answered on here at some point, a truly great source of information from a to z!!! If you have a question that you cannot find an answer to, just ask, there are many very knowledgeable people on this forum more than willing to help and provide answers....
Nothing like the torque of the little diesel Jeep to keep you smiling...

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Supporting Vendor and Moderator of LOST05 Jeep Liberty CRD Limited 
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount98 Dodge Cummins 24 Valve