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au diff noise 

 

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 Post subject: au diff noise
Posted: Sun Apr 27, 2014 7:42 pm 
Oompa Loompa
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Age: 32

Posts: 36

Joined: 8th Jun 2008

Ride: ed xr6

Location: adelaide
SA, Australia

Hi all
Ive got au2 xr8 with irs making a really bad chattering noise.
Ive just changed the diff oil and going by the castrol website
It recommends 80w 140 oil to replace it.
Ive used 75w 140 and a diff additive also. I tried it with nulon g70 additive. It was making the noise even without the additive too.
Any suggestions on what oil or additive to use?
Cheers
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 Post subject: Re: au diff noise
Posted: Sun Apr 27, 2014 8:59 pm 
Moderator
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Posts: 14513

Joined: 7th Nov 2004

Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

more than likely if its chattering with no mater what additive you use, I would say the lsd cone are warn and have bottomed out in the hemisphere and needs rebuilding..
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 Post subject: Re: au diff noise
Posted: Mon Apr 28, 2014 2:25 am 
Oompa Loompa
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Age: 32

Posts: 36

Joined: 8th Jun 2008

Ride: ed xr6

Location: adelaide
SA, Australia

I dont think its that. It was ok on saturday morning and changed the oil at work and now its chattering and clunking. I know VZ commodores need a additive for the same thing. Ive never seen a solid axle do this with a oil change but several irs diffs in holdens do.
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 Post subject: Re: au diff noise
Posted: Mon Apr 28, 2014 9:27 am 
Moderator
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Posts: 14513

Joined: 7th Nov 2004

Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

I have penrite lsd additive in my xr8 and there is no chatter, but my diff has been rebuilt.
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 Post subject: Re: au diff noise
Posted: Thu May 01, 2014 10:54 am 
Getting Side Ways
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Posts: 836

Joined: 1st Apr 2005

Gallery: 4 images

Ride: EF XR6 Wagon, AU2 XR6 VCT

Power: 148 rwkw

Location: Auckland
New Zealand

Our local Ford dealership has had good success fixing most noisy LSDs with Redline Synthetic:
http://www.redlineoil.com/product.aspx?pid=37&pcid=4

It's all I use i both my XR6s, before and after diff rebuilds, and have never had a problem.

Alternatively, you can add just the friction modifier to your existing diff oil:
http://www.redlineoil.com/product.aspx?pid=41&pcid=4

Here is their Australian office:
http://www.redlineoil.com.au/home.asp

 

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