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  #49  
Old 04-22-2011, 10:29 AM
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Re: WK Front and Rear Differential Fluid Change

Do it yourself...so simple.
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  #50  
Old 04-22-2011, 02:20 PM
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Re: WK Front and Rear Differential Fluid Change

Well I got my 75w 140 gear mobil 1 lube do I need the mopar friction stuff too? I got the 4wd.
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  #51  
Old 04-22-2011, 07:02 PM
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Re: WK Front and Rear Differential Fluid Change

Quote:
Originally Posted by ChrisWk View Post
Well I got my 75w 140 gear mobil 1 lube do I need the mopar friction stuff too? I got the 4wd.
I also used Mobile 1 gear oil last year and I did not add limited slip friction stuff. If your grear oil bottle has "LS" on it, it means it already has Limited slip in it.
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Old 04-22-2011, 08:55 PM
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Re: WK Front and Rear Differential Fluid Change

Yes its got the LS on the bottle.

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Old 04-23-2011, 09:08 AM
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Re: WK Front and Rear Differential Fluid Change

Didn't know that about the LS on the Mobil 1 but I still used the Mopar friction modifiers when I did front and rear differentials. I'm pretty sure you still need to do this with electronic limited slip (ELSD) which I have.

Mobil also mentions that you can add additional OEM specific friction modifiers on their web site: http://tinyurl.com/mobil1gear

"...Mobil 1 Synthetic Gear Lube 75W-140 LS contains special friction modifiers designed for limited slip-type differentials.*In most applications, the addition of special LS (limited slip) additives is not required.*For axles requiring the highest level of limited-slip performance, OEM specific LS additives can be added to this fluid."
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Old 04-23-2011, 05:55 PM
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Re: WK Front and Rear Differential Fluid Change

It would be helpful, if someone explain what "highest level of limited-slip performance" mean and If too much Limited-Slip added with oil what happens?

I read on the forums that no limited-slip needed with Mobile 1 "LS". So I never added when I did oil change last year.
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