Re: [TR] Best Anti-Rust Coolant

["John & Pat Donnelly" <pdonnel1@san.rr.com>]

Just so I understand this correctly, having coolent in the water allows the
water in the cooling system to run more efficiently. So if I have proper
50/50 mix then when the gauge shows an increased temp the car is really
being stressed.

I run straight water with no problems.

Johnnie
'67 tr4a

> -----Original Message-----
> From: triumphs-bounces@autox.team.net [mailto:triumphs-
> 
> "The 0 psi boiling point is 3750 F (1900 C)."... Sorry for the
> confusion in
> the [ALT + 0176] degrees symbol not mapping over to the simple text of
> team.net.  It should read 375-degrees F and 190-degrees C, of course.
> 
> The heat capacity of water is about 4.2 J/cubic cm-K-degree.  Propylene
> glycol is about 2.5, ethylene glycol about 2.4.  Densities are less
> than 5%
> different, so on a volumetric basis water can carry over 60% greater
> heat.
>  This is why we normally don't run 100% antifreeze in our systems, and
> probably one of the reasons our old TRs were originally instructed to
> run
> with "clean rain water" unless it was frosty.  More antifreeze isn't
> better.
> 
> So what's really different from the waterless coolants and running 100%
> regular antifreeze?  Propylene vs ethylene glycol?  That doesn't seem
> like
> much...
> 
> Don

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