Antifreeze/H2O Ratio

[Larry C Leung]

Nothing first hand, and haven't had the bother to research it myself, as
none of my applications are that marginal. Emperically, one of my friends
who runs a Formula Ford in SCCA Club racing says it really does make the
difference between running and overheating. His driver (son) says that
there is a noticable difference (no numbers mentioned, but the kid isn't
one for details) in the temp gage running with and without during tire
tests. In principle, it's simply a surfactant (i.e. soap) which breaks up
the water's surface tension, thus allowing better flow and surface
contact. The nature of the beast (small radiators, no fan, motor stressed
fully) for the Formula Ford probably realizes a benefit, for those of us
running stock radiators in street cars (unless running EXTREME boost
(best guess, +2.0 bar or more)) I doubt there is a noticable increase in
cooling performance. May be important if you run a smaller radiator. Also
won't work with the Meca Evans PG coolant, as that coolant is non-polar
and is not supposed to run with any water in it.

Just my $0.02

LL - NY

On Sun, 08 Apr 2001 08:45:39 -0400 Robert Myers <robert at s-cars.org>
writes:
>At 08:23 AM 4/8/01 -0400, Larry C Leung wrote:
>
>>Mike,
>>
>>Anti-Freeze lowers freezing point/raises boiling point BUT has
>>comparatively poor heat transfer properties (compared to water) and 
>less
>>heat capacity (ability to store heat). IF you can keep temps down 
>below
>>the mixture boiling point, more water will transfer more heat from 
>the
>>head to the radiator.
>
>Agreed.
>
>>Water Wetter (Redline) helps water/antifreeze (or
>>water alone) be in fuller contact with the metal surfaces, also 
>helping
>>heat transfer.
>
>I've heard these claims for years, Larry.  Other than promotional 
>stuff 
>and/or package labeling and/or hearsay, do you have any documentation 
>for 
>this claim?  It sounds much like oil of snake to this old chemist and 
>has 
>every time I've heard it from day one.
>
>
>
>>LL - NY
>>
>>On Sun, 8 Apr 2001 04:40:26 -0700 (PDT) =?iso-8859-1?q?mike?=
>><mikemk40 at yahoo.com> writes:
>> >I had always thought it was the other way round....
>> >
>> >mike
>> >
>> >--- Avi Meron <avim at pacbell.net> wrote:
>> >> The more water, the better heat transfer!
>> >> 25/75 in a hot climates isn't too bad.
>> >> Take care,
>> >> Avi
>> >>
>> >> -----Original Message-----
>> >> From: quattro-admin at audifans.com
>> >> [mailto:quattro-admin at audifans.com]On
>> >> Behalf Of Rob Andrews
>> >> Sent: Saturday, April 07, 2001 12:09 AM
>> >> To: Jay Dias; quattro at audifans.com
>> >> Subject: RE: Antifreeze/H2O Ratio
>> >>
>> >> A bit more water
>> >>
>> >> > -----Original Message-----
>> >> > From: quattro-admin at audifans.com
>> >> [mailto:quattro-admin at audifans.com]On
>> >> > Behalf Of Jay Dias
>> >> > Sent: Saturday, April 07, 2001 2:03 AM
>> >> > To: quattro at audifans.com
>> >> > Subject: Antifreeze/H2O Ratio
>> >> >
>> >> >
>> >> > For running in a hot climate which Antifreeze/H2O
>> >> Ratio gives the
>> >> > best heat
>> >> > transfer rate.
>> >> >
>> >> > Thanks,
>> >> >
>> >> > Jay
>> >> > 86&87 5kt
>> >> >
>> >> >
>> >> >
>> >> >
>> >>
>> >
>> >
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>Bob
>*****
>  Robert L. Myers   304-574-2372
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