[AT] antifreeze toxicity was OT - oil stop leak

[Stephen Offiler]

For a heat-transfer fluid, the interesting properties include thermal
conductivity, specific heat capacity, and viscosity.  Between ethylene
glycol and propylene glycol, the first two are nearly identical.  It's
actually the viscosity that makes the difference.

http://msdssearch.dow.com/PublishedLiteratureDOWCOM/dh_010e/0901b8038010e417.pdf

Choosing between propylene glycol and ethylene glycol fluids:
In addition to DOWFROST propylene glycol-based fluids, DOWTHERM® ethylene
glycol-based fluids are also available. There are two major differences
between propylene and ethylene glycol fluids: viscosity and toxicity.
Ethylene glycol-based fluids are less viscous than propylene glycol-based
fluids. Therefore, they generally provide superior heat transfer efficiency
and better low temperature performance and are preferred for most heat
transfer applications.



On Mon, Feb 18, 2019 at 3:30 AM Cecil Bearden <crbearden at copper.net> wrote:

> The thermal conductivity should be nearly the same.  My Belarus has a
> great heater at  1000rpm and above.  If I drop below 1000 it is not so
> great.  I spent about 3 days in 20 deg weather pushing and spreading shale
> for some roads around the homestead here...
> Cecil
> On 2/17/2019 4:45 PM, Jason wrote:
>
>
>
> Amsoil also makes a propylene glycol antifreeze. Its heat transfer
> abilities are better than ethylene.
>
> Good in high temps but not so great in the winter because at idle the
> heater output at idle was nearly non existent.
>
> Jason
>
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