You need GL-4 or MIL-2105 spec gear oil - if it doesn't say GL4 it isn't!
RedLine makes GL4 synthetic - never used it myself as I change my oil once a
year.  I used Texico GL-4.

David Marshall

Fast Forward Autobahn Sport Tuning
4356 Quesnel Hixon Road
Quesnel BC Canada  V2J 6Z3
mailto:info@fastforward.ca      http://www.fastforward.ca
Phone: (250) 992 7775           FAX: (250) 992 1160

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-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Brian Jones
Sent: November 2, 2000 7:24 PM
To: vanagon@GERRY.VANAGON.COM
Subject: synthetic gearlube questions

hi all- getting ready to change the gearlube in the urabus- if you go with a
synthetic like mobile one, does it have to be rated gl4- or by virtue of it
being a synthetic,is the gl4-gl5 universal synthetic ok to run???  thanks
all, Brian