Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2.3) with ESMTP id 433057 for flyrotary@lancaironline.net; Sun, 26 Sep 2004 14:47:03 -0400 Received-SPF: none receiver=logan.com; client-ip=24.25.9.103; envelope-from=echristley@nc.rr.com Received: from ms-mss-03-ce0-1 ([10.10.5.84]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with ESMTP id i8QIkUqo019276 for ; Sun, 26 Sep 2004 14:46:30 -0400 (EDT) Received: from southeast.rr.com (localhost [127.0.0.1]) by ms-mss-03.southeast.rr.com (iPlanet Messaging Server 5.2 HotFix 1.21 (built Sep 8 2003)) with ESMTP id <0I4N005FVW5H5D@ms-mss-03.southeast.rr.com> for flyrotary@lancaironline.net; Sun, 26 Sep 2004 14:46:30 -0400 (EDT) Received: from [10.10.1.22] (Forwarded-For: [143.209.73.14]) by ms-mss-03.southeast.rr.com (mshttpd); Sun, 26 Sep 2004 14:46:29 -0400 Date: Sun, 26 Sep 2004 14:46:29 -0400 From: echristley@nc.rr.com Subject: Re: [FlyRotary] Oil viscosity To: Rotary motors in aircraft Reply-to: echristley@nc.rr.com Message-id: <9a03997b79.97b799a039@southeast.rr.com> MIME-version: 1.0 X-Mailer: iPlanet Messenger Express 5.2 HotFix 1.21 (built Sep 8 2003) Content-type: text/plain; charset=us-ascii Content-language: en Content-transfer-encoding: 7BIT Content-disposition: inline X-Accept-Language: en Priority: normal X-Virus-Scanned: Symantec AntiVirus Scan Engine > > But it does bring up the question, what is the recommended oil > viscosity?5W30 seems a bit low. > > > > Al > > I was thinking the same thing. Leon, will an extremely light oil be able to keep the seperation between the bearings and shaft? On the other hand, will it 'wet' the walls of the cooler better and thereby transfer heat more efficiently?