Vanagon EuroVan
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (September 2009, week 4)Back to main VANAGON pageJoin or leave VANAGON (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Mon, 28 Sep 2009 17:13:00 -0500
Reply-To:     Tom Hargrave <thargrav@HIWAAY.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Tom Hargrave <thargrav@HIWAAY.NET>
Subject:      Re: Bypass oil filter
Comments: To: Old Volks Home <oldvolkshome@GMAIL.COM>
In-Reply-To:  <bfb5ccc40909280918o7ead2ac1y516cecf3a2820db1@mail.gmail.com>
Content-Type: text/plain; charset="us-ascii"

A bypass oil filter works by diverting part of your oil flow through a filter that's set-up to trap very fine particles. They works great in diesels because of the soot diesels generate but are useless in a gasoline burner. Gas burners just don't generate the heavy load of very fine particles that diesels produce.

Mercedes ran a bypass filter in their diesels at least from the early 60's, maybe earlier. Their newer bypass & main filters (~1976 & on) are made into one cartridge, with the bypass part in the top and the full flow in the bottom. If you own a VW and it's a diesel and it has a similar type filter then you are already running a bypass filter. I'm not familiar with VW diesels so I don't know if they used the same system.

Before 1976, Mercedes ran a bypass & main filter. The main filter was a filter screen that was cleaned with kerosene & reused. I lost count of the cars I worked on that had the main filter missing. Owners would change their own oil and throw them out! Problem was, the bypass filter cartridge & main filter were part of a stack-up and without the main filter in place, you were getting no filtration at all!

Thanks, Tom Hargrave 256-656-1924

Our Web Sites: www.kegkits.com www.stir-plate.com www.andyshotsauce.com

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of Old Volks Home Sent: Monday, September 28, 2009 11:18 AM To: vanagon@GERRY.VANAGON.COM Subject: Re: Bypass oil filter

And why would anyone use a bypass oil filter when both air and waterboxer Vanagons have full-flow oil filtration? Just curious...... -- Jim Thompson 84 GL 1.9 "Gloria" 84 Westfalia 2.1 "Ole Putt" 72 411 Station Wagon "Pug" oldvolkshome@gmail.com http://www.oldvolkshome.com *********************************** On Mon, Sep 28, 2009 at 4:49 AM, William Greenamyer <greenamyer@yahoo.com>wrote:

> Anyone still using a bypass oil filter on their van? > > William >


Back to: Top of message | Previous page | Main VANAGON page

Please note - During the past 17 years of operation, several gigabytes of Vanagon mail messages have been archived. Searching the entire collection will take up to five minutes to complete. Please be patient!


Return to the archives @ gerry.vanagon.com


The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.

Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.