To be exact, antifreeze increases the boiling point of the mixture over
water alone. It also lowers the freezing point of the mixture over water
alone. The viscosity changes slightly. Water alone, however is about the
best heat transfer media you will get - water mixed with antifreeze is
also pretty good, but plain water is better (assuming you aren't too hot
and you aren't freezing up). Water alone will make things rust too
though, and the antifreeze usually helps that too. Rust inhibits direct
contact of the heat transfer media, and thus lowers your heating
capabilities.
I think I just said what everyone else did, but with only a little more
detail. They're right.
Phil Bates
'58 MGA
'67 MGB
> Monte:
>
> <<<snip>>>
> Paul Hunt wrote:
>
> As we've discussed before on this list, anti-freeze actually lowers the
> boiling point of water.
> <<<snip>>>
>
> Actually it does RAISE the boiling point of the coolant. What it LOWERS
> is the ability of the coolant to TRANSFER heat. A 50/50 mixture of
> antifreeze having about a 25% less capacity to store, and therefore
> transfer, heat.
>
> Blake.
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