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9" diff help

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Old Aug 1, 2008 | 04:30 PM
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Default 9" diff help

Can someone please tell me what oil to use for a 9 inch diff ??



Thanks.

Last edited by whitesaph; Aug 1, 2008 at 04:36 PM.
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Old Aug 1, 2008 | 04:46 PM
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You can't get 9" diff oil anymore so your diff is pretty much useless now.
Send it to me and I'll dispose of it for you
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Old Aug 1, 2008 | 04:53 PM
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Originally Posted by whitesaph
Can someone please tell me what oil to use for a 9 inch diff ??



Thanks.
The Ford book says Hypoid oil for the Viscous version, if it's plated type LSD you will probably have to run Castrol 373
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Old Aug 1, 2008 | 04:59 PM
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Red face

Originally Posted by martin-reyland
The Ford book says Hypoid oil for the Viscous version, if it's plated type LSD you will probably have to run Castrol 373

Ehhh sorry but how do i tell the differents??

will this help:
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Old Aug 1, 2008 | 05:01 PM
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I can tell you....but I won't.

Last edited by StephTell; Aug 1, 2008 at 05:32 PM.
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Old Aug 1, 2008 | 10:38 PM
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It isnt a viscous.
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Old Aug 1, 2008 | 11:27 PM
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a plated unit then use fully synthetic 80w/140w thats good enough

i have a xtrac 9"plated diff and thats the oil ill be using , i use the same oil in my 7.5 gripper plated diff

marco

Last edited by marco polo; Aug 1, 2008 at 11:29 PM.
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Old Aug 1, 2008 | 11:30 PM
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who did you get the diff off ?
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Old Nov 7, 2011 | 04:28 PM
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For a viscous unit should i use GL4 or 5? hypoid right?
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Old Nov 7, 2011 | 07:03 PM
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The diff oil doesnt interact in any way whatsoever with the VC unit, so doesnt matter.

Just use whatever is recommended for the diff gears themselves
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