X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wx-out-0506.google.com ([66.249.82.230] verified) by logan.com (CommuniGate Pro SMTP 5.2.1) with ESMTP id 2827925 for flyrotary@lancaironline.net; Tue, 01 Apr 2008 15:31:16 -0400 Received-SPF: pass receiver=logan.com; client-ip=66.249.82.230; envelope-from=rwstracy@gmail.com Received: by wx-out-0506.google.com with SMTP id i27so2464973wxd.25 for ; Tue, 01 Apr 2008 12:30:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:sender:to:subject:in-reply-to:mime-version:content-type:references:x-google-sender-auth; bh=DRrNa3otkG3hefNs9+BA8cEh35TdZNOuHCugx69VTtY=; b=ZCahA5CyxgDFpyeuwhGBmvVo9Kt2/JugZriKf4IrLTnx5ql+5JuftsUnAzS45aYY2PPClT3I8h4Y33DBJLAUeXvIjHbRnPfgVJOv+xNhh9THwTxMrGTeyb/vgCV+IeAirsPe1k7HPG41toGA01f1unf6zHHggn/cO34ErSF9P6s= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=message-id:date:from:sender:to:subject:in-reply-to:mime-version:content-type:references:x-google-sender-auth; b=fyspaRlC3In6I5Za6DLIKB8sV+R8YMxY7IA4njNARTIXhSutmJ2kJv1BZjez246SpqKt1+jFnqZfybQMRZdgDjlLOCuz1qk8eLZJ1VO6NmE7DV3czVH38sUQEKGZUUYuw9T93TMXPseWj7B2laeKHByLWWfrLjok9FKuc5BAmFM= Received: by 10.101.69.10 with SMTP id w10mr20160311ank.68.1207078236067; Tue, 01 Apr 2008 12:30:36 -0700 (PDT) Received: by 10.100.133.10 with HTTP; Tue, 1 Apr 2008 12:30:36 -0700 (PDT) Message-ID: <1b4b137c0804011230v1976851hae220bca22779fba@mail.gmail.com> Date: Tue, 1 Apr 2008 15:30:36 -0400 From: "Tracy Crook" Sender: rwstracy@gmail.com To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: 2-stroke oil In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_7941_30417829.1207078236059" References: X-Google-Sender-Auth: b8e1214dc898158c ------=_Part_7941_30417829.1207078236059 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline I doubt that it matters but I'm surprised about the 'not for water cooled engines' part. The TCW-3 rating is by the BIA (Boating Industry of America). I haven't seen an air cooled boat motor in a very long time. I've burned a lot of Super-Tech oil and MMO over the last 14 years with no problems. Tracy On Tue, Apr 1, 2008 at 12:48 PM, Al Gietzen wrote: > 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 MM= O > proven for this application? My research also indicates that the TCW-3 > rating only is not recommended for watercraft (water-cooled engines), whe= re > the NMMA rating is required. So do we best get the stuff for air-cooled > 2-stroke =96 which probably run hotter; the stuff for watercraft =96 whic= h > 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 15= 0K > 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 combustib= le. > 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 somewhe= re > in the 20 to 50 : 1. > > > > Al (Still grounded working on mods) > ------=_Part_7941_30417829.1207078236059 Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
I doubt that it matters but I'm surprised about the 'not for w= ater cooled engines' part.  The TCW-3 rating is by the BIA (Boatin= g Industry of America).  I haven't seen an air cooled boat motor i= n a very long time.  
 
I've burned a lot of Super-Tech oil and MMO over the las= t 14 years with no problems. 
Tracy
On Tue, Apr 1, 2008 at 12:48 PM, Al Gietzen <= ALVentures@cox.net> wrote:

<= span style=3D"FONT-SIZE: 12pt">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 Walma= rt.  Any of the Redline 2-stroke oils would be excellent, including th= e snomobile stuff.

 

The only 2-stroke oil I could f= ind at the local Walmart was called Super-Tech, and I couldn't find any cer= tifications on it anywhere.  Is MMO proven for this application? = My research also indicates that the TCW-3 rating only is not recommended f= or watercraft (water-cooled engines), where the NMMA rating is required. So= do we best get the stuff for air-cooled 2-stroke =96 which probably run ho= tter; the stuff for watercraft =96 which probably run cooler; or something = else (other than Redline).  Or is there no data to support a choice an= d I'm over-analyzing and it doesn't matter anyway.

<= span style=3D"FONT-SIZE: 12pt"> 

<= span style=3D"FONT-SIZE: 12pt">Let us know if you notice any change when yo= u go to premix.  My old 1988 RX-7 felt spunkier when I started using p= remix 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 oct= ane enhancers.  The Super-Tech is 'pre-diluted' ("with what"? you may = ask) to make it mix more readily with fuel. 

 

What Pre-mix ratio??<= /font>  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 m= ods)


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