Below is a snippet of Daarryl's wisdom on the matter
<snip>
Same with Redline...It is slippery and won't cause much of a real
world problem from what I have seen...The difference from MTL & MT90 is
the Vanaogn ring & pinion slide on each other during operation and need a
bit more cushion (long chain molecules in MT90)to keep wear down vs the
Jetta style tranny's which use straighter cut gears and use MTL.
</snip>

Cheers,
Doug

Matthew Pollard <poll7356@UIDAHO.EDU>
Sent by: Vanagon Mailing List <vanagon@GERRY.VANAGON.COM>
09/23/2002 12:18 PM
Please respond to Matthew Pollard

        To:     vanagon@GERRY.VANAGON.COM
        cc:
        Subject:        Re: Redline gear lube

why mtl over mt-90. I thouhg it had to do with the inner working and
hidden mechanisms of the tranny. According to darrel christensen of AA
transaxles, you want mt-90 due to the angle of the spinning gears
(verticle or horizontal). I run mt-90 in my syncro tranny and front diff.

matthew
86 syncro westy i4

On Mon, 23 Sep 2002, Bob Stevens wrote:

> I'm switching my '87 Syncro Westy manual also Pat, to MTL. That has been
> recommended by several people to me from this list.