Return-Path: Received: from [65.173.216.71] (HELO mtasmtp1-clev.cle.ms.philips.com) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 354384 for lml@lancair.net; Fri, 06 Aug 2004 10:31:16 -0400 Received-SPF: none receiver=logan.com; client-ip=65.173.216.71; envelope-from=Rob.Logan@Philips.com Received: from picker.com ([149.59.192.105]) by mtasmtp1-clev.cle.ms.philips.com (Lotus Domino Release 5.0.11) with SMTP id 2004080610302077:48931 ; Fri, 6 Aug 2004 10:30:20 -0400 Received: from [149.59.200.4] (HELO Philips.com) by picker.com (CommuniGate Pro SMTP 3.3b1) with ESMTP id 16591772 for lml@lancair.net; Fri, 06 Aug 2004 10:30:44 -0400 Message-ID: <411395EE.50406@Philips.com> Date: Fri, 06 Aug 2004 10:30:06 -0400 From: Rob Logan Reply-To: Rob@Logan.com User-Agent: Mozilla Thunderbird 0.5 (X11/20040214) X-Accept-Language: en-us, en MIME-Version: 1.0 To: lml@lancair.net Subject: oil X-MIMETrack: Itemize by SMTP Server on mtasmtp1-clev/P/SERVER/PHILIPS-CLE(Release 5.0.11 |July 24, 2002) at 08/06/2004 10:30:20 AM, Serialize by Router on mtasmtp1-clev/P/SERVER/PHILIPS-CLE(Release 5.0.11 |July 24, 2002) at 08/06/2004 10:30:52 AM, Serialize complete at 08/06/2004 10:30:52 AM Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii; format=flowed just thinking aloud... the pump that pushes oil around is driven indirectly by the crank governed by RPM... so inflight the oil pressure should be extremely stable... over time it might change +-1 due to oil temp, but those movements should be tiny as 6qts of oil have quite abit of thermal mass. oil pressure for my engine should be between 30 and 60. but even with a tiny bit of oil, the pump is going to try to keep the pressure constant... so the first sign of low oil might be a fluctuation in oil pressure, likely because of tiny bubbles in the oil or very short un-porting of the pump draw line.. note to self: the prop requires oil pressure to work.. another note to self: if the oil preshure is changing, find the closest airport.