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  1. #3
    Join Date
    Aug 2011
    Location
    NSW Australia
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    5,210

    Default Re: Type of gear oil XJ

    80/90 is fine in front and rear for general use.

    If the rear diff is a limited slip then you need an LSD additive ... or a LSD oil.

    If you're working the diffs hard offroad - or doing a lot of towing - you might want to step up to 75w/140 ... as per the factory specs for heavy duty use.

    Grey RTV is fine on the diffs. but use the hi-temp stuff if thats what you have.
    Gaskets are good if you can get 'em.
    Make sure you clean ALL the old RTV off.
    Last edited by Carves; 12-29-2015 at 06:50 AM.
    I hate watching simplicity and reliability being ruined by bureaucracy and technology.

    Quote Originally Posted by MattybPDX
    If my jeep is going to be a grocery getter it's at least going to be a friggin awesome one.

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