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Diff change etc..

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Old Oct 23, 2006 | 07:26 AM
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Waynester5.7's Avatar
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Default Diff change etc..

Hi all,

1st day back to the forum, been offline 5 days as we are changing IS provider.. to long to go without CF.

Anyhay.... how simple is it to change the diff oil? My wife has lost/thrown/hidden my manual.. Cannot find it anywhere!

I have obtained a 20ml syringe (easy...i work in science) as i thought this may make it easier to get the oil out/in?

I have yet to look under and I/D the tag showing the type/grade of oil used. Can anyone let me know, for a '90 auto.

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Old Oct 23, 2006 | 07:41 AM
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Real simple, even a caveman could do it. For pictures and step by step process, go to c4guru.com its Andy Bogus's web site---go to "tech library" it really well done and getting better.
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Old Oct 23, 2006 | 03:33 PM
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Yup. Peep Andy's web site. I changed mine about a month ago and it's easy as day.

Use the Mobil 1 Synthetic 75/90 weight gear oil and two bottles of the GM rear axle lube (Chevy dealer) too.
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Old Oct 23, 2006 | 04:22 PM
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Originally Posted by onedef92
Yup. Peep Andy's web site. I changed mine about a month ago and it's easy as day.

Use the Mobil 1 Synthetic 75/90 weight gear oil and two bottles of the GM rear axle lube (Chevy dealer) too.


Took less than an hours...2 beer job
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Old Oct 23, 2006 | 05:53 PM
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Originally Posted by elefkow
Real simple, even a caveman could do it.

Last edited by Z-07 freak; Oct 23, 2006 at 05:55 PM.
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