X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA07.emeryville.ca.mail.comcast.net ([76.96.30.64] verified) by logan.com (CommuniGate Pro SMTP 5.2.1) with ESMTP id 2816357 for flyrotary@lancaironline.net; Mon, 24 Mar 2008 21:47:40 -0400 Received-SPF: none receiver=logan.com; client-ip=76.96.30.64; envelope-from=gregw@onestopdesign.biz Received: from OMTA04.emeryville.ca.mail.comcast.net ([76.96.30.35]) by QMTA07.emeryville.ca.mail.comcast.net with comcast id 5DBQ1Z0010lTkoCA702600; Tue, 25 Mar 2008 01:45:49 +0000 Received: from gregoryii ([24.6.40.29]) by OMTA04.emeryville.ca.mail.comcast.net with comcast id 5Dmn1Z0050dkeQQ8Q00000; Tue, 25 Mar 2008 01:46:47 +0000 X-Authority-Analysis: v=1.0 c=1 a=qIwgwuCjp5gO8yCDi8kA:9 a=6tPRTyJP7K5qnBiG9eoA:7 a=qUOvI7VLDrqfPo8Z90JhMD1ogdEA:4 a=kJVaTwQnZmMA:10 a=PRK_uiVvCuUIbZt2u48A:9 a=W7OkMmaIlAuaoF6w24cA:7 a=yoTb4owWV_zXasNaohmUXCRWvjQA:4 a=MSl-tDqOz04A:10 a=EzXvWhQp4_cA:10 a=AfD3MYMu9mQA:10 Message-ID: <08ec01c88e1a$312dfb10$8801a8c0@yosemite.onestopdesign.biz> From: "Greg Ward" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Oil Change Interval Date: Mon, 24 Mar 2008 18:47:31 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_08E9_01C88DDF.8468C020" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_08E9_01C88DDF.8468C020 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable And what about synthetics? My BMW goes 15K between oil changes, and I = am going on 175K miles, without a burp. Greg Ward 20b Lancair in Progress ----- Original Message -----=20 From: Mark Steitle=20 To: Rotary motors in aircraft=20 Sent: Monday, March 24, 2008 4:39 PM Subject: [FlyRotary] Oil Change Interval I don't recall this being discussed on the Fly Rotary list in the = recent past. So, here goes...=20 What is the consensus regarding oil change intervals for normally = aspirated rotary powered a/c, assuming Mobil 1 and a high quality oil = filter. I want to err on the safe side, but with a 12 quart capacity, = we're talking about $100 per oil change. I don't want to damage my = engine/psru, but I also don't want to dump good oil either. =20 Mark S. ------=_NextPart_000_08E9_01C88DDF.8468C020 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
And what about synthetics?  My BMW goes 15K = between=20 oil changes, and I am going on 175K miles, without a burp.
Greg Ward
20b Lancair in Progress
----- Original Message -----
From:=20 Mark = Steitle=20
Sent: Monday, March 24, 2008 = 4:39=20 PM
Subject: [FlyRotary] Oil Change = Interval

I don't recall this being discussed on the Fly Rotary = list in=20 the recent past.  So, here goes...

What is the consensus=20 regarding oil change intervals for normally aspirated rotary powered = a/c,=20 assuming Mobil 1 and a high quality oil filter.   I want to = err on=20 the safe side, but with a 12 quart capacity, we're talking about $100 = per oil=20 change.   I don't want to damage my engine/psru, but I also = don't=20 want to dump good oil either. 

Mark=20 S.
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