Red82

Lockers in the axles and armor (skids and body armor).

no rdplz

Pretty much was 93gc40 said...
1. Change ALL your fluids
2. Change your filters
3. Change your spark plugs

These 3 things alone will save you headaches in the future. Start it all fresh and just keep up with preventative and regular maintenance. A haynes/chilton's manual can go a long way.

4. Research and "build" your jeep before you buy any type of offroad related product. By this I mean plan it out. Research short arm lifts vs long arms; lift sizes; tire sizes; bumpers; winches; armor; lockers; gears.....all of it. Know what you want to do and go from there.
5. Buy/build some armor for the diffs, t-case, and gas tank. Also invest in recovery items (minimum of a hitch with a d-ring tongue, front tow hooks, 2 tow straps).
6. Wheel it stock. You'll be a smarter, better offroad driver if you learn and drive it stock for a few trips.
7. Finally allow the addiction to take over and build it. Just remember, there's ALWAYS something more you can do to it.

repoman78

So 4 hi gets me part time how do i get full time?

Zack92MJ

4lo

salad

Full-time 4WD is only available on the NP242 transfer case, Chrysler called this the "Select-Trac" option. "Command-Trac" is part-time only and the shifter has 2H-4H-N-4L. In 4H and 4L both front and rear drive shafts are mechanically locked to spin at the same rate. 4L reduces gear from 1:1 to 2.72:1 (well, in my model, or something like that) for extra torque

Also, grats on the XJ and welcome to the forum! Pay attention here, I have learned lots!

Zoider

OK, what are lockers in the axle and what do they provide?

Low Profile

Air lockers, skid plates, etc. Stock suspension is a Jeep is still pretty tough unless you're going to be crawling vertical faces or something like that, and I probably wouldn't pick an XJ for rock crawling.

Lockers in the axle(s) provide you with traction on every wheel even if one wheel loses traction and spins. You can engage/disengage lockers depending on the type--air lockers, mechanical, electronic, etc.) Ever get a RWD car stuck in snow, where one wheel spins and you get no traction out of the other one? If that happens in a mudhole or on a gravel slope you are stuck.

vespa50sp

It's 12 years old, even with low miles. Start with changing the fluids, give it a tune-up and then drive it like you stole it.

repoman78

can i take wheels and rims from liberty and work on xj?