at this point might want to go to an air-cooled  type of trans cooler.
it's common on Subaru engine conversions...
or to have a better auto trans oil cooler set up on a stock vanagon.

----- Original Message -----
From: "Tobias Gogolin" <usertogo@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, April 16, 2011 2:36 AM
Subject: Transmission Oil Cooler Leaking - Again!

> Is it a common issue? I replaced my automatic transmission fluid cooler
> (with a used one) about a year and a half ago, now again I find
> transmission
> oil in the coolant (since a few weeks) and vice versa (since a few days)!
>
> I'm getting tired of just replacing again, something must be to be learned
> and improved here!