Jonathan Bartlett was nice enough to send me some pictures of the oil
bypass system he installed on his Passat TDI.

The system allows him to do 60,000 mile oil changes. The oil is still in
good condition as verified by oil analysis testing.

http://24.112.110.104/gtdproject/fluids/gulf/gulfexample.htm

You can have a look here.

http://www.gulfcoastfilters.com/

This is the company who makes the system.

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Dominique Cormann                              Email: kozmik@home.com
Homepage: http://kozmik.guelph.on.ca
Diesel page: http://kozmik.guelph.on.ca/gtdproject
84 Rabbit D - daily driver              84 Rabbit GTD - work'in on it