so, if i read this link correctly: http://en.wikibooks.org/wiki/Jeep_Liber ... _Intervals

we can put 75w-140 in the front and back. Does anyone's service manual for the 2005 verify this?

Anyone used Royal Purple?
This is what the 2005 online manual states:

Axle Differential (Front) Mopar Gear & Axle Lubricant (SAE 80W-90) or equivalent.
Axle Differential (Rear) Mopar Synthetic Gear Lubricant (SAE 75W-90) or equivalent. For trailer
towing, the lubricant should be replaced with Mopar Synthetic Gear &
Axle Lubricant (SAE 75W-140) or equivalent. Models equipped with Trac-
Lok™ require a limited-slip additive.

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"Never mind the maneuvers, go straight at "em," Lord Horatio Nelson

2005 Jeep Liberty CRD

The 2005 service manual doesn't call for 75W-140 in the front diff, but you will probably be fine with it there anyway, if you just want to keep things simple.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

My service manual specifies either front or rear. I use 80W-140 synthetic simply because I tow things and its never really cold here but it can be very hot.

Yeah, I've been using RP since the first change for no other reason than it's all I could find here and the price was reasonable.

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