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Re: Proper Gear Oil for Rear Diff
Posted to Technical Discussion Forum on 3/15/2011 7 Replies

If the service info says "GL 5 SAE 90 Gear Oil", then why wouldn't you use that or even GL5 80W-90?

It does not say to use synthetic. It does not give a VW spec #. All you need to use is regular old gear oil. Login to read more.

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