My dealer said I should change the gear oil in the front and back axles every 12K miles? What? I have 80k and never changed it. I ordered some Royal Purple 75 /140 To put in there. But the dealer also says not to use anything but MOPAR because "THEY HAVE HAD PROBLEMS" anyone have any insight?

they are probly just trying to sell you the mopar stuff. as for the gear oil change i would do it I found metal in mine from brake in at 33000 miles in both axles. so i would change it.

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daily driver:06 midnight blue jeep liberty CRD sport.
mods: CRD frakenlift, 245/75R16 grabbers on Soft 8's,All J interior rack,front hitch,custom intake,ORM, EHM GDE hot tune
141k miles

No, you do not need to use Mopar oil.. They were just wanting to make a sell..

I believe royal purple also comes with the friction modifier already in it so if you have a limited slip you are good to go. Read on the bottle to make sure it has the friction modifier in it if you do infact have a limited slip

The gear oil should of been done at 30k and 60k at least. I did mine at 12k and again at 18k when I put my locker in. Ill do it again at 30k along with the tranny and tcase. Ill check the front diff and change it out if needed, I doubt it will need it though.

Sometimes when maintenance like this isnt done, it will show up in the long run. It mostly depends on how the Jeep was used though. If it was a road queen, its ok to not do things like the gear oil for alittle while longer. 80k is just a tad to long though.

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LOST KJ'S
Where are you going???
Current Jeep: 2004 Jeep Liberty
-Atlantic Blue
-Air Ride Rear Suspension ; OME/Rustys Lift ; Powertrax Locker ; Moog Lower Ball-Joints ; 245/70/16 Yokohama Geolander A/T-S's on MOABS ; Flowmaster 50 SUV
Lost #007082
http://www.cardomain.com/id/jeepjeepster

How much of the friction modifier should be added? I have the trac-lok and am planning on doing my diffs in the next week or so.


Justin

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2005 Blue KJ Renegade
Too big to fit into most LA parking garages.

You need 4oz.

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'03 Reny Cactus Green - All the comforts, Escape Hatch, Trac-lok, Selec-trac, Full disk brakes + 45RFE (built Sept 2002).
Had: '98 Dodge Ram 1500 SWB RWD 5.2L - I will miss you...

cool, thanks.

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2005 Blue KJ Renegade
Too big to fit into most LA parking garages.

Royal Purple does come with the friction modifier; I had a bottle and decided to use it anyways.
FYI: I found Royal Purple synthetic at Pep Boys for $9.99

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"I'm the guy who does his job, you must be the other guy"
02 Black UNlimited Edition 4X4 Select Trac Liberty Towing/Off Road Packages 245/75/16 on black Moabs
RL diff cover/Super Skink sliders, Rusty's 2.5" Coil Lift w/ clevis lift, Roof basket W/Hella FF75...
On the prowl for an M416/M101/M100 trailer
L.O.S.T. Member 2877

thanks for the replys.. My Royal Purple vendor is sending me a "SAMPLE" case of 75/140 gear oil I went to get the seals for the axles and they said to use RTV. will that be OK? also my Rustys 2.5 spacer lift will be here in the next day or two. When I install it is ther any tricks to make it easier or any pit falls?>


Thanks

Tate Stroud
eastern NC

03 liberty sport 4X4
245-70-17 Firestone A/T
2.5 Rusty's (by the weekend)
1/2 built homemade but pro made roof rack
100% homemade fish and storage rack for rear

Yup, the RTV will be fine. Thats what most people use anyway. I personally order gaskets from Randys Ring and pinion. Never had any leaks and it saves ALOT of time. I wont need to clean the other RTV off next time either.

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LOST KJ'S
Where are you going???
Current Jeep: 2004 Jeep Liberty
-Atlantic Blue
-Air Ride Rear Suspension ; OME/Rustys Lift ; Powertrax Locker ; Moog Lower Ball-Joints ; 245/70/16 Yokohama Geolander A/T-S's on MOABS ; Flowmaster 50 SUV
Lost #007082
http://www.cardomain.com/id/jeepjeepster

Whats the going price on Diff oil changes?

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'05 Liberty Sport
KN air filter
2.5." Rusty's coil lift
radio shack CB, with Wilson antenna
Super Skid II, mopar Transfer cas and gas tank skids
Rusty's Sliders
5 235/70/16 Fireston Destination AT's
next: performance and new tires

My dealer wanted 110 pier axle. I just finished my Rusty's 2.5 spacer lift and I have had nothing but trouble. I am a maintenance manager and I got the help of my best mechanic to install the spacers the rear went in very easy besides having to drop the rear end to allow the spring to go back in with the spacer. The front well .....its sitting there until tomorrow. We had nothing but trouble after putting the spacers in how can you get it all back together? we pushed pulled adjusted and I decided to ask Ruasty's tomorrow. just so everyone knows. It is not as easy as the internet says. you must remove the battery, and lots of other things just to get to the strut mounts. The rear looks good and the front spacers looked solid (but i had to redrill all the holes larger for it to line up Big pain). Has anyone installed this lift and can tell me an easier way to finish my Libby?

Did you use a spring compressor to compress the spring after adding the spacer? Put it back together the same way you took it apart.

_________________
LOST KJ'S
Where are you going???
Current Jeep: 2004 Jeep Liberty
-Atlantic Blue
-Air Ride Rear Suspension ; OME/Rustys Lift ; Powertrax Locker ; Moog Lower Ball-Joints ; 245/70/16 Yokohama Geolander A/T-S's on MOABS ; Flowmaster 50 SUV
Lost #007082
http://www.cardomain.com/id/jeepjeepster

well I fianally finished my lift install and it looks great I don't know why they sell these with out them. I ended up haveing to lower the A arm and the sway arm to get the strut back in. My spring comppressor kept getting stuck between the spring so I apted to lower everything. during my fish high ride I heard allo of popping. I re check all the torx spec per my hanes manual and have an alignment scheduled for tomorrow. Anyone know what make the popping sound? will the alignment fix it? It looks like I will be changes axle oil during the weekend anything to be aware of while I'm under there?