X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 20 [X] Return-Path: Received: from mtiwmhc12.worldnet.att.net ([204.127.131.116] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2065407 for flyrotary@lancaironline.net; Thu, 24 May 2007 12:40:58 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.131.116; envelope-from=keltro@att.net Received: from mwebmail24.att.net ([204.127.135.63]) by worldnet.att.net (mtiwmhc12) with SMTP id <2007052416402011200dageke>; Thu, 24 May 2007 16:40:20 +0000 Received: from [64.250.199.220] by mwebmail24.att.net; Thu, 24 May 2007 16:40:19 +0000 From: keltro@att.net (Kelly Troyer) To: "Rotary motors in aircraft" Subject: Re: 2-cycle oil mix Date: Thu, 24 May 2007 16:40:19 +0000 Message-Id: <052420071640.22264.4655BFF2000EFA9F000056F82160376223019D9B040A05@att.net> X-Mailer: AT&T Message Center Version 1 (Mar 24 2007) X-Authenticated-Sender: a2VsdHJvQGF0dC5uZXQ= MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_22264_1180024819_0" --NextPart_Webmail_9m3u9jl4l_22264_1180024819_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Lynn, I presume from your comments below that the use of a synthetic in the sump to be injected is not a good idea........What is your opinion on the use of synthetic 2 cycle oil as a premix for our a/c use other than the fact it is more expensive ?? -- Kelly Troyer "Dyke Delta"_13B ROTARY Engine "RWS"_RD1C/EC2/EM2 "Mistral"_Backplate/Oil Manifold -------------- Original message from Lehanover@aol.com: -------------- Synthetic oil is still oil. it is refined to the point that most of the molecules are the same size. Additives to improve film strength may be from other than oil sources. Film strength is generally much higher than conventional oils. Much more stable at very high temperatures. Thus a poor choice for stock rotaries that use the sump oil to inject for apex seal lube, since it does not burn at operating temperatures, and thus gums up the apex seal grooves. > Lynn E. Hanover See what's free at AOL.com. --NextPart_Webmail_9m3u9jl4l_22264_1180024819_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Lynn,

I presume from your comments below that the use of a synthetic in the sump

to be injected is not a good idea........What is your opinion on the use of synthetic

2 cycle oil as a premix for our a/c use other than the fact it is more expensive ??

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold

-------------- Original message from Lehanover@aol.com: --------------

Synthetic oil is still oil. it is refined to the point that most of the molecules are the same size.

Additives to improve film strength may be from other than oil sources. Film strength is generally much higher than conventional oils. Much more stable at very high temperatures.

Thus a poor choice for stock rotaries that use the sump oil to inject for apex seal lube, since it does not burn at operating temperatures, and thus gums up the apex seal grooves.

> Lynn E. Hanover

See what's free at AOL.com.

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