[Vwdiesel] Transmission fluid draining

[Shawn Wright]

On 30 May 2005 at 10:12, LBaird119 at aol.com <LBaird119 at aol.com> wrote:

> Some of us
> have transmissions that are 25-30 years old.
> 
> 
>   Probably more like MOST of us!    :-)
>   I'm pretty sure I read the warning about GL-5 attacking the 
> bronze parts in the Bentley manual.  I've only used the Amsoil 
> in mine and it's still available in GL-4 AND GL-5.  Only VW/Audi 
> application I've found that uses the GL-5 is the rear diff in my 
> 4KQ.

I think the diff in the auto trans can also use GL-5. The Vanagon trans is 
an odd one, in that it has a highly stressed hypoid gear (the ring & pinion), 
yet does not use GL-5 which is specifically designed for such gears. In this 
application only the best synthetic GL-4 will do, or just use a GL-5 and 
suffer with poorer shifting and possibly shorter syncro life, but longer R&P 
life (a $600 part, I have a failed one I kept as a paperweight...). Many, 
including the local VW dealer, and the VW shop that rebuilt my Vanagon 
trans, just use plain old GL-5, not even synthetic. I can confirm that the 
cold shifting, even at 15C, with GL-5 dino oil, is awful!




Shawn Wright
http://zuiko.sls.bc.ca/~swright
'85 Jetta D 
'88 Westy 2.1L, soon to be 1.6TD 5 speed
 (see progress at http://members.shaw.ca/vwdiesels)
'82 Diesel Westy