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Sealing rear diff

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Old 05-13-2012, 04:04 PM
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Default Sealing rear diff

I'm changin the gear oil in my c8.25 today... How should I seal it up when I'm done? Rtv?
Old 05-13-2012, 04:06 PM
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a good RTV will be fine.

let it set a little bit before your fill the oil
Old 05-13-2012, 04:08 PM
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Orange/Red RTV. And what Dave said about letting it cure a while.
Old 05-13-2012, 04:12 PM
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Could always use a lube locker instead...
Old 05-13-2012, 04:20 PM
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A good layer of black RTV will do the trick. Lubelocker is a waste of money in my opinion.
Old 05-13-2012, 04:32 PM
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To much work cleaning RTV off all the time dry gsk little oil on the housing and reuse over and over again
Old 05-13-2012, 04:37 PM
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Can't find a gasket for it I could order but dont wanna wait
Old 05-13-2012, 04:48 PM
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That black can set pretty fast if it's hot. I would put it on snug right away, then tighten it a bit later. You don't want a bunch squished into the works inside! I guess the blue gives you more time, and the orange is suppose to be better for high temp.
Old 05-13-2012, 05:15 PM
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Use gray permatex rtv its made for gear oil and its what chrysler uses
Old 05-13-2012, 05:27 PM
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Right-Stuff Gasket Maker FTW.
Old 05-13-2012, 06:21 PM
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How frequent does one change gear oil.....frequent high water crossings or high gear loads? If so, LubeLockers seem like a good idea if u do frequent changes....if not, how could u beat a FelPro gasket with a thin film of RTV on both sides?

Just snug on the cover bolts, don't crank 'em down hard.
Old 05-13-2012, 06:38 PM
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Originally Posted by Rustydog555
To much work cleaning RTV off all the time dry gsk little oil on the housing and reuse over and over again

This, plus Lube lockers you don't have to wait to set, bolt up, torque down, fill up and go!!
Old 05-14-2012, 09:17 PM
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Originally Posted by 99 Purple XJ
Use gray permatex rtv its made for gear oil and its what chrysler uses
The MOPAR stuff is grey but that doesn't mean it's the same stuff as Permatex grey. SRT techs told us to use orange on SRT8OC.
Old 05-15-2012, 08:53 AM
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Lubelocker ftw!
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Old 05-15-2012, 08:55 AM
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Originally Posted by BotakBeng
Lubelocker ftw!
Oooh yeah


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