Select Trac II

Drag Line

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Hi All,

I have a 2011 Liberty with the 3022 tag on the transfer case.

Jeep states through the VIN Tag search that it is a Select Trac II. This model of STII is supposed to have a Limited Slip Differential that should be locking the front & rear axle together for a 48%:52% torque split when needed.

I have read that the transfer case uses the same ATF+4 fluid as the 42RLE main box.

Questions are;

#1 is that the correct fluid or is there some different or better I should be using?

#2 Does that Limited Slip in the transfer case have friction clutch packs & need the additional clutch pack additives or is it a mechanical system like an Eaton TruTrac so just the fluid is OK without the additives?

Thank you all in advance for the information.
 

Drag Line

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Update on the 3022, Select Trac II transfer case.

ATF+4 fluid is the fluid to use, as per Jeep and numerous differential/transfer case rebuilders.

The STII does have plated friction clutch packs. It is INFERRED but not stated the ATF+4 fluid acts the same as the friction additive recommended for plated limited slip clutch discs in differentials.

I have yet to find out who provided the LS components for this transfer case.
 
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