Paul is correct, water has better heat-transfer characteristics than glycol.
I would have to assume that the requirements of high-altitude aviation
engines must be somewhat different, in that heat transfer is less of an
issue and/or corrosion more of one.
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
on 2/27/03 12:36 PM, Paul Root at proot@iaces.com wrote:
> Prestone is now advertising pre-mixed anti-freeze.
>
> I think the problem with running straight anti-freeze
> is that it's heat transfer properties are bad. I.E. the
> heat of the engine wouldn't get absorbed well by the
> anti-freeze.
>
> Paul.
>
>
> Chris wrote:
>> What about pure antifreeze? Though I think the stuff you buy contains water
>> anyway...
>>
>> The reason I ask is I have a vague childhood memory of asking someone at an
>> air museum if the rolls-royce griffon engines on an avro shackleton were
>> watercooled, to which the guy replied, "glycol actually".
>> So I guess my question is can one run an engine with pure ethylene glycol in
>> the cooling system and if not why not?
>> Would this help with scale and corrosion?
>> Any experts? (my knowledge of chemistry is about as good as my knowledge of
>> late model BMW wiring harnesses)
>>
>> Chris
>> 1/2 a '73 B
>> Johannesburg
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