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  #13  
Old 01-03-2013, 07:39 PM
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We always used 75-90 w which is a lot thinner the 70-140w. I am trying to find why they require such a heavy grade but is does say synthetic with 4 oz of additive.

That's just heavy?? Like I said its possible that maybe its just stuck or the oil is just sludge till it warms up. ( I am leaning toward the later)

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Old 01-03-2013, 07:58 PM
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Re: Fr diff concern?? Elsd, qd ii

I get it...it seems heavy...just following the engineers. Ya know. I am a little stumped...i have been around cars my whole life and am mechanically and technically savy...it is the fact that it goes away when warm an operates normally that has me twisted. Thanks for sticking with me on this.
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Old 01-03-2013, 07:58 PM
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Re: Fr diff concern?? Elsd, qd ii

Hmmm, It looks like all Models ( not just QDII ) are recommended to use 75-140 and its just the WK models . The Wk 2 uses 75-85 .

The only difference with the QDII is the 4 OZ of additive

No Problem ,lol. I have the QDII as well. so the more I know the better ,lol
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Old 01-03-2013, 08:15 PM
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Re: Fr diff concern?? Elsd, qd ii

Quote:
Originally Posted by SILVERCHAMP View Post
I get it...it seems heavy...just following the engineers. Ya know. I am a little stumped...i have been around cars my whole life and am mechanically and technically savy...it is the fact that it goes away when warm an operates normally that has me twisted. Thanks for sticking with me on this.
the Locker that is in ours isnt exactly a electronic , It has some hydro properties. In limited slip "mode" It builds pressure with the fluid and then when it detects slippage then it locks but only in 4 low.

I did some research on it a few weeks ago let me find it and i will copy and paste it here.

This could be why you are having this issue .
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Old 01-03-2013, 08:23 PM
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Re: Fr diff concern?? Elsd, qd ii

EGERODISC DIFFERENTIALS
EGerodisc™ is a hydraulically-operated electronically controlled limited slip differential that provides variable torque up to full axle lock. It automatically identifies the optimal traction solution at any speed. The EGerodisc™ is a commercially proven technology in production on the Jeep Grand Cherokee. It provides superior vehicle cross-country mobility and improved control for safety and roll-over protection. The electronically controlled actuation provides rapid response for stability and traction control. It eliminates driver interface; no driver training is needed. The EGerodisc uses standard gear oil and is virtually maintenance free.


here is the thread I was discussing above.
WK front ELSD on WK2?
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Old 01-03-2013, 08:56 PM
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Re: Fr diff concern?? Elsd, qd ii

Well...that poses a response now...maybe i should try the lighter weight and use the additive...just for a day or two as a test..if it doesn't change it i go back...
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Old 01-05-2013, 03:17 PM
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Re: Fr diff concern?? Elsd, qd ii

Did you have any luck just disconnecting the wire harness?

The typical solution to binding with an LSD is to add more Modifier, just enough to get rid of the issue though. I've had no issues using Amsoil 70W-140, but I also chose to add friction modifier in the recommended amounts even though Amsoil says it's already in there. The recommended amount is for the Mopar fluid so using something different will require you to find the right level on your own.
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Old 01-05-2013, 06:04 PM
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Re: Fr diff concern?? Elsd, qd ii

I have used also 75-140 Castrol syntrax for limited slip diff .. no problems
I've always noticed a small difference between driving my jeeps cold and warmed up
I would check with the limited slip additive or that the entry of the oil pump and the filter are free (i had the case on a WJ i get some stuff blocking the oil flow)

Below a link forsome additional explanation about the locker system
How Quadra-Drive-II ELSD diff works .. animated video. - Jeep Commander Forums: Jeep Commander Forum

I hope it helps
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Old 01-07-2013, 11:41 AM
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Re: Fr diff concern?? Elsd, qd ii

I have not had a chance to unplug the sensor....when i do i will post it ...thanks for the links...it helped...stay tuned.
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Old 01-08-2013, 12:31 PM
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Re: Fr diff concern?? Elsd, qd ii

which sensor are you trying to unplug ? or are you taking from the ELSD connector?
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Old 01-08-2013, 12:38 PM
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Re: Fr diff concern?? Elsd, qd ii

elsd connector....top of the diff.
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Old 01-08-2013, 01:17 PM
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Re: Fr diff concern?? Elsd, qd ii

normally it should not be a problem
I found also the test of the diff in the commander workshop manual (160MB)

below the extract of the procedure they have

Raise vehicle and rotate tires in the opposite direction at the same time. This will make any oil left in the piston
chamber apply pressure to the clutch and create some drag on the wheels. The wheels will not lock because the differntial solenoid is not activated.

you can have a try
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