Diff oil

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Old 09-15-2001, 02:38 PM
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Default Diff oil

I want to change a differential oil in my 93 90cs. How can I drain the old oil? I can only see one plug and it is on the side of diff. housing. Looks to me like that one is for filling/checkig oil. Also what grade of oil shoud I use?
Car manual is saying it is filled for life and is not listing that oil in maintance chapter but I'm getting close to 200k and want to change it.
Derek
Old 09-15-2001, 03:09 PM
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Default RED LINE MT-90

The drain plug is located on the bottom of the diff. housing. Make sure you can loosen the fill plug on the side of the housing first.
You can purchase the above oil from AMS. See link.
I know the factory says never change it, but I am choosing to change it every
60,000.
God Bless America!<ul><li><a href="http://www.advancedmotorsport.com/">http://www.advancedmotorsport.com/</a</li></ul>
Old 09-15-2001, 04:55 PM
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Default Re: RED LINE MT-90

It is not a quattro model so diff is located on the side of my automatic transsmision and I can't locate anywhere a drain plug for diff. Can anyone check Bentley's manual for it? (I just bought my but it will be few days before I'll get it)
Derek
Old 09-15-2001, 05:53 PM
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Automatic diff can be drained with suction method from fill plug
Old 09-15-2001, 06:08 PM
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What grade-viscosity of oil shoud I use?
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