(sorry for the cross post.. but i'm doing this in about 4 hours)
I have a 2wd van I've just completed my engine conversion and will be
adding tranny fluid to TODAY.
I purchased a valvoline synthetic blend 80-90 I believe was a GL5
rated, I was looking for a GL4 but all on the shelves were GL5 at my
local FLAPS.

I am also going to be doing my 87 Syncro (obligatory SVC) over the
winter ..  Will GL5 rated work in my 2wd or are all trannys deathly
allergic to ANY GL% rated trans oil?..

From: "Don in North Carolina" <Don_Dixon@bellsouth.net>
Subject:

Al,

I would recommend that you use the Redline MT-90 oil, rather than the
Mobil
1 oil.  The Mobil 1 oil is a GL-5 rated oil, and as such, is not
suitable
for the Vanagon transaxle.  Mobil 1 was a GL-4 oil years ago, but no
longer.
I am using MT-90 (GL-4 rated) in my transaxle, and 75W-90 NS (GL-5
rated) in
my front differential (you can run MT-90 in both the front and rear if
you
want, however).  I ordered my oil through Advance Auto (FLAPS).

For info on the process, try going to the "Been There, Done That" web
page
listed below.

http://vw.upnorth.net/Changing_gearbox_oil101.htm

Don in Reidsville, NC
1987 Vanagon GL Syncro - Will trade for a Westie or Weekender 2WD!!