Annoying, isn't it?  I've tightened the pans on both the vans I work on and they still weep a bit.  One is even a recently rebuilt unit from German Transaxle.  I think there are too few bolts, and the sheet metal pan just deforms around the ones that are there and the seal breaks between them.

Next step for me is a LIGHT application of the "Right Stuff" to both surfaces and a new gasket.  You don't want any caulk squeezing into the pan where it can break off and cause all sorts of problems.

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Larry Alofs
Sent: Tuesday, April 07, 2015 9:43 AM
To: vanagon@GERRY.VANAGON.COM
Subject: AT leakage '91 GL

Does anyone wish to offer some clues or suggestions about how to install the bottom pan on a vanagon AT without leakage.
  Generally I have held to the belief that clean straight surfaces and a new gasket should be enough and silicone, etc. should not be needed.  In the case of my current project, however, I may have to conclude otherwise.
What works?

Larry A.
  too many vangagons, too little time