[Vwdiesel] Transmission fluid draining

Roger Brown r.c.brown at ieee.org
Wed May 25 20:28:31 EDT 2005

Milt Kaplan wrote:
> 86 Jetta TD engine. Seems to be an inside hex bolt for tranny draining. What size?

Usually a 17mm socket head plug, same size as the lug bolts.

> I know MTL is excellent to use. Anyone try a synthetic blend such as Valvoline 80W-90? 

You want a GL-4 gear oil if possible for the best shifting performance.  If you want to run a GL-5 gear oil, try adding a tube 
of limited slip friction modifier to the oil.


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