The air cooled Vanagon does have the bypass and the OEM filter for it
does not have an anti-drain back valve. Different application. The water
boxer engine does not have the bypass.

Dennis

-----Original Message-----
From: Stan Wilder [mailto:wilden1-1@sbcglobal.net]
Sent: Thursday, June 24, 2004 6:47 AM
To: Dennis Haynes; vanagon@GERRY.VANAGON.COM
Subject: Re: Re: oil filter question

 The Vanagon engine does not.
-------------------------- Clip ---------------------------
Air Cooled Vanagon engines have a bypass and the WBX have this valve
too.
I can prove it with pictures if it requies that.

Stan Wilder
----- Original Message -----
From: "Dennis Haynes" <dhaynes@OPTONLINE.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, June 23, 2004 5:36 PM
Subject: Re: oil filter question

> The Golf/Jetta has an oil filter bypass in the engine, (usually in the
> filter mount). The Vanagon engine does not. This is the difference
> between the two filters. Almost all aftermarket filters have the
bypass
> valve so the same number is used for both applications. The bypass is
> only used if the filter is clogged or the oil is so thick it can not
> flow through the paper. At that point it probably can't flow through
the
> bearings either.
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
Behalf
> Of The Bus Depot
> Sent: Wednesday, June 23, 2004 1:04 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: oil filter question
>
> > This may be a very good reason why the vanagon engines
> > have oil pressure problems, after many miles.
> >  Now the real question:  Why does Mann and Mahle make
> > a specific Vanagon oil filter????   Why not use the vanagon
> > quality oil filter on the Golf anf Jetta?  Somthing is up
>
>
> I don't know if the Vanagon filter is optimal for a Golf or not. The
> Golf engine has its own set of requirements. While the Vanagon filter
is
> superior in some ways (such as a higher grade of filter material,
> according to Mahle), it may be that in other ways it simply has
> different specs from what the Golf calls for.  Also, the Vanagon
filter
> is a bit more expensive than the Golf filter.  If Mann and Mahle
> discontinued the Golf filter and sold the more expensive Vanagon
filter
> in its place, they'd be at a competitive disadvantage against
companies
> that sold the actual Golf filter.
>
> - Ron Salmon
>   The Bus Depot, Inc.
>   www.busdepot.com
>   (215)  234-VWVW
>
> _____________________________________________
> Toll-Free for Orders by PART # :  1-866-BUS-DEPOT