X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao107.cox.net ([68.230.241.39] verified) by logan.com (CommuniGate Pro SMTP 5.2.1) with ESMTP id 2827629 for flyrotary@lancaironline.net; Tue, 01 Apr 2008 12:45:43 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.39; envelope-from=alventures@cox.net Received: from fed1rmimpo03.cox.net ([70.169.32.75]) by fed1rmmtao107.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20080401164503.CYZX6668.fed1rmmtao107.cox.net@fed1rmimpo03.cox.net> for ; Tue, 1 Apr 2008 12:45:03 -0400 Received: from BigAl ([72.192.137.74]) by fed1rmimpo03.cox.net with bizsmtp id 8Gl21Z0051cVYgg04Gl2dQ; Tue, 01 Apr 2008 12:45:02 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: 2-stroke oil Date: Tue, 1 Apr 2008 08:48:08 -0800 Message-ID: <000001c89418$2a134110$6401a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C893D5.1BF27210" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C893D5.1BF27210 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable For the premix oil I use any good BIA cert. TCW-3 2-stroke oil mixed = 50-50 with MMO both of which come from Walmart. Any of the Redline 2-stroke = oils would be excellent, including the snomobile stuff. =20 The only 2-stroke oil I could find at the local Walmart was called Super-Tech, and I couldn't find any certifications on it anywhere. Is = MMO proven for this application? My research also indicates that the TCW-3 rating only is not recommended for watercraft (water-cooled engines), = where the NMMA rating is required. So do we best get the stuff for air-cooled 2-stroke - which probably run hotter; the stuff for watercraft - which probably run cooler; or something else (other than Redline). Or is = there no data to support a choice and I'm over-analyzing and it doesn't matter anyway. =20 Let us know if you notice any change when you go to premix. My old 1988 RX-7 felt spunkier when I started using premix in it but it was an old = 150K mile beater. If you were doing the 50-50 MMO at the time, that could make a = difference. It contains both toluene and xylene which are very combustible. Some 2-stroke oils contain other octane enhancers. The Super-Tech is 'pre-diluted' ("with what"? you may ask) to make it mix more readily = with fuel. =20 =20 What Pre-mix ratio?? IIRC, I've heard on this list to use about 1 oz = per gallon, which is about 130:1. Most 2-stroke applications are somewhere = in the 20 to 50 : 1. =20 Al (Still grounded working on mods) ------=_NextPart_000_0001_01C893D5.1BF27210 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

For the premix oil I use any good BIA cert. = TCW-3 2-stroke oil mixed 50-50 with MMO both of which come from = Walmart. Any of the Redline 2-stroke oils would be excellent, including the = snomobile stuff.

The only 2-stroke oil I could = find at the local Walmart was called Super-Tech, and I couldn’t find any = certifications on it anywhere. Is MMO proven for this application? My = research also indicates that the TCW-3 rating only is not recommended for = watercraft (water-cooled engines), where the NMMA rating is required. So do we best = get the stuff for air-cooled 2-stroke – which probably run hotter; the = stuff for watercraft – which probably run cooler; or something else = (other than Redline). Or is there no data to support a choice and I’m over-analyzing and it doesn’t matter anyway.

Let us know if you notice any change when you = go to premix. My old 1988 RX-7 felt spunkier when I started using premix = in it but it was an old 150K mile beater.

If you were doing the 50-50 MMO = at the time, that could make a difference. It contains both toluene and = xylene which are very combustible. Some 2-stroke oils contain other octane = enhancers. The Super-Tech is ‘pre-diluted’ (“with what”? = you may ask) to make it mix more readily with fuel.

What Pre-mix = ratio?? IIRC, I’ve heard on this list to use about 1 oz = per gallon, which is about 130:1. Most 2-stroke applications are = somewhere in the 20 to 50 : 1.

Al (Still grounded working on = mods)

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