Pretty weird, possibly a plugged up vent.  Look for a plastic cap
somewhere on top of the transaxle and make sure it is clean.  If it is
blocked then the sump could be getting pressurized and fluid will blow
out the filler tube.  You should also be able to attach a clean hose to
the fill tube and blow into it.  There should be little if any
resistance to your blowing air.  If this is not it, then there is a
problem in the hydraulic system, perhaps a stuck relief valve
somewhere.   I don't know that much about auto trannys, you might have
to take it to someone who does.

Good luck!

Thomas Czerniak wrote:
>
> I posted this question about a week back. Got one
> reply asking me what I had obiovously stated was
> the case  in the question . Lets try again!
>     Is there anyone on this list who actually has
> working knowledge of Automatic  transaxles and the
> Vanagon trans axle in particular? If so ,has
> anyone ever had a problem with tranny fluid
> backing up out of the filler tube. The vehicle is
> an 1985 Vanagon Westy . Fluid levels are correct,
> being checked at operating temperature with the
> engine running. Fluid and filter screen have been
> changed. This problem happened before the change
> and still happens. Only need to drive a small
> distance to make it happen. Anyone have any idea
> what is going on? Any insight would be
> appreciated. Thanks!
> Tom Czerniak

--
Stuart MacMillan
Manager, Case Program
800-909-8244 ext 208

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