Return-Path: Received: from rwcrmhc12.comcast.net ([216.148.227.85] verified) by logan.com (CommuniGate Pro SMTP 4.2.1) with ESMTP id 402397 for flyrotary@lancaironline.net; Wed, 08 Sep 2004 12:27:09 -0400 Received-SPF: none receiver=logan.com; client-ip=216.148.227.85; envelope-from=jesse@jessfarr.com Received: from farrhome (pcp04959909pcs.midval01.tn.comcast.net[68.59.199.44]) by comcast.net (rwcrmhc12) with SMTP id <2004090816264101400mhl7je>; Wed, 8 Sep 2004 16:26:42 +0000 Message-ID: <079b01c495c0$8d444ea0$777ba8c0@farrhome> From: "jesse farr" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] oil viscosity? Date: Wed, 8 Sep 2004 12:26:05 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0798_01C4959F.030BCC20" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0798_01C4959F.030BCC20 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageRusty: Strange that you mention that but I think many of us are = going to try this, right about now. Probably not all great minds running = in similar tracks thing, but just something many have concluded to try = lately. I was amazed to see what all grades viscosity wise they now have = available. The new foreign car stuff has extremly wide range. You may = want to try it. jesse farr ----- Original Message ----- From: Russell Duffy=20 For my next question, what weight of oil are you using? I'm using = Mobil 1 SuperSyn, and have only used 15W-50 so far. I don't know about = the RX-8, but I know that almost every vehicle on the planet uses 5W-30 = now. I bought some 5W-30 the other day, but still haven't decided if = I'll use it, or swap it for one of the other weights. =20 My thinking when picking up the 5W-30 was to limit the resistance = through the cooler, and filter. I also understand that lower viscosity = oil will probably provide better cooling, due to higher flow, and = perhaps better heat transfer. It would also limit the initial pressures = that will be seen on a cold startup. Bruce did mention that he thinks = Tracy prefers the higher weight oils for the benefit of the redrive, = since it's using engine oil, rather than the proper gear lube. Of = course, these are auto transmission gears, which don't use heavy lube = anyway. =20 SuperSyn comes in 5W-30, 10W-30, and 15W-50, so which would be best? ------=_NextPart_000_0798_01C4959F.030BCC20 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Rusty: Strange that you mention that = but I think=20 many of us are going to try this, right about now. Probably = not all=20 great minds running in similar tracks thing, but just something many = have=20 concluded to try lately. I was amazed to see what all grades viscosity = wise they=20 now have available. The new foreign car stuff has extremly wide=20 range. You may want to try it.  jesse farr
----- Original Message ----- = From: Russell=20 Duffy
 
For my next = question,=20 what weight of oil are you using?  I'm using Mobil 1 SuperSyn, = and have=20 only used 15W-50 so far.  I don't know about the RX-8, but I know = that=20 almost every vehicle on the planet uses 5W-30 now.   I = bought some=20 5W-30 the other day, but still haven't decided if I'll use it, or swap = it for=20 one of the other weights. 
 
My thinking = when picking=20 up the 5W-30 was to limit the resistance through the cooler, and = filter. =20 I also understand that lower viscosity oil will probably provide = better=20 cooling, due to higher flow, and perhaps better = heat transfer.  It=20 would also limit the initial pressures that will be seen on a cold=20 startup.  Bruce did mention that he thinks Tracy prefers the = higher=20 weight oils for the benefit of the redrive, since it's using engine = oil,=20 rather than the proper gear lube.  Of course, these are auto = transmission=20 gears, which don't use heavy lube=20 anyway.   
 
SuperSyn = comes in 5W-30,=20 10W-30, and 15W-50, so which would be=20 best?
------=_NextPart_000_0798_01C4959F.030BCC20--