The sandwich adapter is the one you want.
Unless you want to install a larger remote filter and the external oil
cooler.
When you unscrew your filter you'll be able to look up into the filter mount
bracket and see the pressure relief valve that needs to be blocked off.
(No it is not absolutely necessary to block it off, it can be the cause of
only a portion of the oil going to the new external cooler though. Making
you think you wasted your time installing the external cooler.)
I've run the sandwich adapters on Type IV VW engines and Porsche and never
had any problems other than getting the adapter on tight enough that it
didn't move at oil filter changes.

Stan

----- Original Message -----
From: "Skip Emmert-Keaton" <skip@SKIPEMMERT.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, April 28, 2004 11:25 AM
Subject: Re: More oil cooler

> As I was looking for adapters to replace the oil filter for my oil cooler,
I
> see there are a couple of different types.  One that replaces the oil
filter
> (which then needs to be relocated) and a sandwich type which goes between
> the filter and the engine (leaving the filter pretty much where it was).
> The sandwich type seems like it would work well for this application.  Has
> anyone had any problems with them?
>
>
> Thanks for any help,
>
> Skip Emmert-Keaton
> 1980 Westy <Ziegelstein>