Red Line has a synthetic ATF (#D4) which is also rated GL-4. It seems
remarkable to me, and it might solve the issue of the unintentional
"sharing" of lube between the trans & diff sections.

Vern McIntosh
Bend, Oregon

----- Original Message -----
From: "Mike" <mbucchino@CHARTER.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, April 23, 2008 7:23 AM
Subject: Re: Message to Newbies

>   The automatic trans-axle still has a differential section lubed with
gear
> oil; the same as a manual trans.  Only the slushbox gear section is lubed
by
> the automatic transmission fluid.  So, the same gearlube recommendation
goes
> for that portion.  They're also known for internally leaking, and sharing
> fluids between the separate sections.
>   Many people forget this important additional service point.  That's why
> many auto transaxles go in for rebuilds or cores with a bad ring and
pinion.
> Daryl and others should have some valuable input on this.
>
> Mike B.
>
>snip<