This is what I picked up for changing my fluids...

My Jeep is a 1998 TJ 4 cly Standard Transmission...

Engine Oil - Mobile 1 Extended Performance Full Synthetic
Filter- Fram Synthetic Oil Filter
Transfer Case Fluid - Mobil 1 Super ATF +4 Automatic Transmission Fluid
Gear Fluid- MotorMaster Synthetic 75w90
Transmission Fluid - Ordered Redline MTL for Transmission...


Couple Questions...
Was wondering if this was a good choice...also I want to change my Tranny fluid today and no one has Redline so I ordered it but what could I use in the mean time that would be good that I could buy at NAPA or Canadian tire or something???

Also do I need Friction Moddifier for my gear fluid?

 

Fluids are as personal at times as modding your Jeep, all I run is Amsoil in all my Jeeps and Wix/ Amsoil filters. If you really like your Jeep don't run the Fram filter, NAPA Gold's are a good/ better choice for the same price.
Depending on what diff's you have (I'm assuming you have a D30 and D35) most required some friction modifier. Check on your bottle of diff oil, some manufacturers add it in already.

 

X2000 on the Fram filter.Lose it ASAP. They are shoddy.

 

Just a question but why would you want to use a high speed sports car transmission oil in your Jeep's tranny? Seems like overkill to me, especially at the prices I found for it.

 

Friction modifier is only needed if you have a limited slip differential, not otherwise.

There is a special oil for the AX-5/15 transmission, the MTL is good, or the stuff from the dealer. It's GL3 75w90 oil. Don't use a GL4 or 5 oil as it will eat the brass in your synchro's. Make sure it is safe for brass.