X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 07 Jul 2007 20:36:28 -0400 Message-ID: X-Original-Return-Path: Received: from sfa.gami.com ([68.89.254.162] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2164256 for lml@lancaironline.net; Sat, 07 Jul 2007 18:34:02 -0400 Received-SPF: none receiver=logan.com; client-ip=68.89.254.162; envelope-from=gwbraly@gami.com Received: from localhost (localhost.localdomain [127.0.0.1]) by sfa.gami.com (Postfix) with ESMTP id 0B75629C07C for ; Sat, 7 Jul 2007 17:33:22 -0500 (CDT) Received: from sdf1.mail.taturbo.com (unknown [10.10.10.173]) by sfa.gami.com (Postfix) with ESMTP id A5CBD29C073 for ; Sat, 7 Jul 2007 17:33:21 -0500 (CDT) Content-Class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C7C0E6.D1846648" X-MimeOLE: Produced By Microsoft Exchange V6.0.6603.0 Subject: RE: [LML] oil filters - 21st century preferred X-Original-Date: Sat, 7 Jul 2007 17:33:19 -0500 X-Original-Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [LML] oil filters - 21st century preferred Thread-Index: Ace/PXgVb9nGeaShQn6psy1biv4gPABqSXtw From: "George Braly" X-Original-To: "Lancair Mailing List" X-Virus-Scanned: by amavisd-new-2.3.2 (20050629) (Debian) at gami.com This is a multi-part message in MIME format. ------_=_NextPart_001_01C7C0E6.D1846648 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Colyn, =20 Keep in mind that there is about 400 million hours of aircraft piston engine experience in engines for which there was no oil filter and they never changed the oil - - they just added oil as needed. Engines had excellent TBO's. In many cases, over 3000 hours. =20 George =20 _____ =20 From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Colyn Case on earthlink Sent: Thursday, July 05, 2007 2:48 PM To: lml@lancaironline.net Subject: [LML] oil filters - 21st century preferred =20 =20 I did a little research on oil filters and discovered that: a) champion bypass pressure differential is below continental spec b) champion particle size is 40 microns which is right at expected film thickness. auto spec is 25 microns c) in general, much higher efficiency filters are available to the auto-industry =20 I'm wondering if anyone on the list has experience with better filters. =20 thanks, =20 Colyn =20 ------_=_NextPart_001_01C7C0E6.D1846648 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Colyn,

Keep in mind that there is about = 400 million hours of aircraft piston engine experience in engines for = which there was no oil filter and they never changed the oil - - they just added oil = as needed. Engines had excellent TBO’s. In many = cases, over 3000 hours.

George

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Colyn Case on = earthlink
Sent: Thursday, July 05, = 2007 2:48 PM
To: = lml@lancaironline.net
Subject: [LML] oil = filters - 21st century preferred

I did a little research on oil filters and discovered = that:

a) champion bypass pressure = differential is below continental spec

b) champion particle size is 40 = microns which is right at expected film thickness. auto spec is 25 = microns

c) in general, much higher = efficiency filters are available to the auto-industry

I'm wondering if anyone on the list has experience = with better filters.

thanks,

Colyn

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