X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 08 Jul 2007 23:00:12 -0400 Message-ID: X-Original-Return-Path: Received: from [65.13.226.109] (HELO lucky.dts.local) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2165086 for lml@lancaironline.net; Sun, 08 Jul 2007 08:10:44 -0400 Received-SPF: none receiver=logan.com; client-ip=65.13.226.109; envelope-from=cjensen@dts9000.com Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C7C158.EAFC3FD2" Subject: RE: [LML] Re: oil filters - 21st century preferred X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 X-Original-Date: Sun, 8 Jul 2007 08:10:04 -0400 X-Original-Message-ID: <8984A39879F2F5418251CBEEC9C689B3945F95@lucky.dts.local> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [LML] Re: oil filters - 21st century preferred Thread-Index: AcfA+AgOenKTZ9GfSDmW0c/mm2hhcAAYNcXw From: "Chuck Jensen" X-Original-To: "Lancair Mailing List" This is a multi-part message in MIME format. ------_=_NextPart_001_01C7C158.EAFC3FD2 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable George, =20 Not to put you on the spot, but I will....are you suggesting that (like cars) we change oil and filters (if we have them) too often? Or at least more often than necessary? Chuck Jensen=20 =20 -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of George Braly Sent: Saturday, July 07, 2007 8:36 PM To: lml@lancaironline.net Subject: [LML] Re: oil filters - 21st century preferred 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 ________________________________ 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_01C7C158.EAFC3FD2 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message=
George,
 
Not to = put you on=20 the spot, but I will....are you suggesting that (like cars) we = change oil=20 and filters (if we have them) too often?  Or at least more often = than=20 necessary?

Chuck = Jensen
 
 -----Original = Message-----
From:=20 Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = George=20 Braly
Sent: Saturday, July 07, 2007 8:36 PM
To:=20 lml@lancaironline.net
Subject: [LML] Re: oil filters - 21st = century=20 preferred

Colyn,

 

Keep in mind = that there=20 is about 400 million hours of  aircraft piston engine experience in = engines=20 for which there was no oil filter and they never changed the oil - - = they just=20 added oil as needed.   Engines had excellent = TBO’s.  In many=20 cases,  over 3000 hours.

 

George

 

From:=20 Lancair Mailing List=20 [mailto:lml@lancaironline.net] On = Behalf Of=20 Colyn Case on earthlink
Sent: Thursday, July 05, 2007 = 2:48=20 PM
To:=20 lml@lancaironline.net
Subject:=20 [LML] oil filters - 21st century = preferred

 

 

I did a little research on = oil=20 filters and discovered that:

    a) = champion=20 bypass pressure differential is below continental=20 spec

    b) = champion=20 particle size is 40 microns which is right at expected film thickness. =  =20 auto spec is 25 microns

    c) in = general,=20 much higher efficiency filters are available to the=20 auto-industry

 

I'm wondering if anyone on = the list=20 has experience with better filters.

 

thanks,

 

Colyn

 

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