X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 01 Mar 2008 00:03:45 -0500 Message-ID: X-Original-Return-Path: Received: from elasmtp-galgo.atl.sa.earthlink.net ([209.86.89.61] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2761261 for lml@lancaironline.net; Thu, 28 Feb 2008 08:04:59 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.61; envelope-from=douglasbrunner@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=LoDOKQ4wqHLl959ycS0J8oTXgav0tdYYCr2wJjmQ5wx7gKVvBUD8qQiJnGB3RaAi; h=Received:Message-ID:From:To:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [74.93.196.177] (helo=DFWK3391) by elasmtp-galgo.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1JUiQo-0000cT-O9 for lml@lancaironline.net; Thu, 28 Feb 2008 08:04:15 -0500 X-Original-Message-ID: <011a01c87a0a$71784c30$1bd0a60a@DFWK3391> From: "Douglas Brunner" X-Original-To: "Mailing List Lancair" Subject: Oil Temps and Oil Doors X-Original-Date: Thu, 28 Feb 2008 08:04:24 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0117_01C879E0.886B55B0" 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 X-ELNK-Trace: ad85a799c4f5de37c2eb1477c196d22294f5150ab1c16ac04d04932202c5b85b1f8285d1a1daab602024f8005843fc91350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 74.93.196.177 This is a multi-part message in MIME format. ------=_NextPart_000_0117_01C879E0.886B55B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable On a recent trip from Florida to Tennessee I observed oil temps in the = 150s. =20 My engine is an IO-550N built by Monty Barrett. I decided not to = install a remotely controlled oil door because I had been told that low = oil temps were rarely/never a problem in the Legacy. My experience = differs. When I started the flight OATs (8000) ft were in the 40s and oil temps = were in the 180s. But by the time I finished OATs (8000) were in the = 20s and oil temps were in the 150s. Related to and probably partially = the cause of the problem was my use of a low power setting (2300 RPM, no = ram air, 30deg LOP) to extend range. Can low oil temps shorten TBO/damage the engine? =20 Even with regular 25 hour oil changes using Exxon Elite? =20 Should I go to the trouble to retrofit a remote oil door, or just change = my oil at a shorter interval? Enquiring minds wish to know. D. Brunner ------=_NextPart_000_0117_01C879E0.886B55B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
On a recent trip from Florida to = Tennessee I=20 observed oil temps in the 150s. 
 
My engine is an IO-550N built by Monty=20 Barrett.  I decided not to install a remotely controlled oil door = because I=20 had been told that low oil temps were rarely/never a problem in the=20 Legacy.  My experience differs.
 
When I started the flight OATs (8000) = ft were in=20 the 40s and oil temps were in the 180s.  But by the time I finished = OATs=20 (8000) were in the 20s and oil temps were in the 150s.  Related to = and=20 probably partially the cause of the problem was my use of a low power = setting=20 (2300 RPM, no ram air, 30deg LOP) to extend range.
 
Can low oil temps shorten TBO/damage = the=20 engine?  
Even with regular 25 hour oil = changes using=20 Exxon Elite? 
Should I go to the trouble to retrofit = a remote oil=20 door, or just change my oil at a shorter interval?
 
Enquiring minds wish to = know.
 
D. Brunner
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