I got some 70-90w synthetic blend gear oil and a limited slip additive (trans-x) to put on the liberty, is this compatible with what I have? The additive says it is not for quadratrac, is that a problem for this application?
Also, can I use the same synthetic blend gear oil for the TC? Any additives I need for this?

Thank You.

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02 Jeep liberty gasser

You'll be fine with that combo in your rear diff.ATF+4 for the t-case.

Excellent, Thank You.

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02 Jeep liberty gasser

So, anybody try Mobile 1 75-140w both rear and front diffs? Does the front have to have 75-90?

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2006 CRD
GDE Eco tune
EHM mod
Costco Battery (bettery than stock <$70)
Shell Rotella T-6
Fumoto Valve


1993 YJ --- SOLD
33x12.50, 4" lift
98 durango alternator mod
99 durango stearing box mod

1997 TJ --- SOLD
Raptor Lined
33x12.50, 4.25" lift
Sahara Hardtop

You can run that,I did for 7 years.

I have switched both front and rear diff to Royal Purple 75/90 and added the additive to the rear.
I also changed the motor to Royal Purple 5/30, all seems to be fine so far.
Has anyone used the Royal Purple ATF fluid? according to them it is an acceptable substitute for ATF+4 but I am not so sure I want to find out the hard way.

Amsoil synthetic gear lube and Lubegard gear additive.

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2006 KJ CRD Ltd - Suncoast, GDE Eco, EGR Delete, After market T-Stat, Skid Row skids, V6 airbox, 2.5" Turbo back
2005 KJ CRD Sport-Suncoast, Transco, GDE Hot-GDE Trans, EGR Delete, Skid Row skids, V6 airbox, 2.5" Turbo back, After market S-Stat
1987 Suzuki LWB Samurai -diesel powered, custom 4 link coil suspension 38.5 SX Swampers