Return-Path: Received: from smtp810.mail.sc5.yahoo.com ([66.163.170.80] verified) by logan.com (CommuniGate Pro SMTP 4.2b3) with SMTP id 3221973 for flyrotary@lancaironline.net; Sat, 08 May 2004 14:51:14 -0400 Received: from unknown (HELO Davidscmptr) (dcarter11@sbcglobal.net@216.63.105.110 with login) by smtp810.mail.sc5.yahoo.com with SMTP; 8 May 2004 18:51:12 -0000 Message-ID: <032a01c4352d$68de0e00$6401a8c0@Davidscmptr> Reply-To: "David Carter" From: "David Carter" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: MPG Coolant Date: Sat, 8 May 2004 13:51:01 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0327_01C43503.7F896020" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 This is a multi-part message in MIME format. ------=_NextPart_000_0327_01C43503.7F896020 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable David, "the performance is not really significantly better" doesn't seem to be = even close to the facts - the performance is much WORSE, as Ed A just = pointed out. The point is, you need a significantly bigger cooling = system - &/or cooling system heat rejection capacity - if you use MPG. = This was discussed extensively a year or two ago. It is not a good = idea. Check it out further before you commit to it. I'm going to use "environment friendly" water, plus John Deere Coolant = Conditioner (lower cost equivalent to motorcycle trade's Water Wetter) = for max heat transfer in 6 warm months and 50/50 normal antifreeze when = freezing level drops. I looked in my e-mail "hard copy" files and found one from Ed March 30 = 1999 summarizing same conclusions. Chuck harbert wrote March 29, 1999 = that "NPG gets very viscous at below freezing temps and therefore should = not be used where air temps are below 10-15deg F. What happens is that = the NPG won't move thru the rad and the engine overheats." David Carter ----- Original Message -----=20 From: daveleonard@cox.net=20 To: Rotary motors in aircraft=20 Sent: Saturday, May 08, 2004 1:30 PM Subject: [FlyRotary] Re: MPG Coolant That's funny. I did a similar search and seemed to discover that the = performance is not really significantly better but I will probably use = it from now on for its environmental properties. =20 The same search did convince me of the benifical properties of water = wetter, so I ordered some of that :-) Thanks, Dave > Subject: [FlyRotary] Re: MPG Coolant >=20 > Dave, > I did a search on the web, and the MPG coolant is Mono Propylene = Glycol. It > is the non-toxic anti-freeze, and apparently it does have a much = higher > boiling point. Both Sierra and Amsol make one. After reading about = it, I'm > definitely going to get some. >=20 > Steve Brooks > Cozy MKIV 13BT >=20 > -----Original Message----- > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On > Behalf Of daveleonard@cox.net > Sent: Saturday, May 08, 2004 12:44 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] MPG Coolant >=20 >=20 > One of the guys at the airport says that "all" the subaru guys are = using > something called MPG instead of Ethylene Glycol/water because it boils = at > 290 without need to be pressurized. >=20 > Does anyone know anything about that stuff? >=20 > Dave Leonard >=20 >=20 > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html >=20 >=20 > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html >=20 >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_0327_01C43503.7F896020 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
David,
 
"the performance is not really significantly better" doesn't seem = to be=20 even close to the facts - the performance is much WORSE, as Ed A just = pointed=20 out.  The point is, you need a significantly bigger cooling = system -=20 &/or cooling system heat rejection capacity -=20 if you use MPG.  This was discussed extensively a year or two = ago.  It=20 is not a good idea.  Check it out further before you commit to=20 it.
 
I'm going to use "environment friendly" = water, plus=20 John Deere Coolant Conditioner (lower cost equivalent to motorcycle = trade's=20 Water Wetter) for max heat transfer in 6 warm months and 50/50 normal = antifreeze=20 when freezing level drops.
 
I looked in my e-mail "hard copy" files = and found=20 one from Ed March 30 1999 summarizing same conclusions.  Chuck = harbert=20 wrote March 29, 1999 that "NPG gets very viscous at below freezing temps = and=20 therefore should not be used where air temps are below 10-15deg F.  = What=20 happens is that the NPG won't move thru the rad and the engine=20 overheats."
 
David Carter
 
----- Original Message -----=20
From: daveleonard@cox.net
Sent: Saturday, May 08, 2004 1:30 PM
Subject: [FlyRotary] Re: MPG Coolant

That's funny.  I did a similar search and = seemed to=20 discover that the performance is not really significantly better but I = will=20 probably use it from now on for its environmental properties.  =

The=20 same search did convince me of the benifical properties of water wetter, = so I=20 ordered some of that :-)

Thanks,
Dave

> Subject: = [FlyRotary]=20 Re: MPG Coolant
>
> Dave,
> I did a search on the = web, and=20 the MPG coolant is Mono Propylene Glycol.  It
> is the = non-toxic=20 anti-freeze, and apparently it does have a much higher
> boiling=20 point.  Both Sierra and Amsol make one.  After reading about = it,=20 I'm
> definitely going to get some.
>
> Steve = Brooks
>=20 Cozy MKIV 13BT
>
> -----Original Message-----
> From: = Rotary=20 motors in aircraft [mailto:flyrotary@lancaironline.net]On
> Behalf = Of daveleonard@cox.net
> = Sent:=20 Saturday, May 08, 2004 12:44 PM
> To: Rotary motors in = aircraft
>=20 Subject: [FlyRotary] MPG Coolant
>
>
> One of the = guys at=20 the airport says that "all" the subaru guys are using
> something = called=20 MPG instead of Ethylene Glycol/water because it boils at
> 290 = without=20 need to be pressurized.
>
> Does anyone know anything about = that=20 stuff?
>
> Dave Leonard
>
>
> = >> =20 Homepage:  http://www.flyrotary.com/
> = >>  Archive:   http://lancai= ronline.net/lists/flyrotary/List.html
>=20
>
> >>  Homepage:  http://www.flyrotary.com/
> = >>  Archive:   http://lancai= ronline.net/lists/flyrotary/List.html
>=20


>>  Homepage:  http://www.flyrotary.com/
>&= gt; =20 Archive:   http://lancai= ronline.net/lists/flyrotary/List.html
------=_NextPart_000_0327_01C43503.7F896020--