Thats interesting, Marv.  Does it have the same thermal conductivity and specific heat as water?

Dave Leonard

>
> I think what you're referring to is Evans NPG.  We have to run it in the
> Eagle540 because of the magnesium heads and intake manifold.  It's a bit
> pricey, at around $25/gal, and if you've had 50/50 water/anti-freeze in the
> system you need to 1) flush & purge the system with clean water, 2) drain well
> and blow out with air, then 3) use the Evans "purge" fluid that binds with the
> last of the water in the system.   4) Drain that and fill with NPG.  We had to
> send back a sample of coolant after the first engine run to verify that 99% of
> the water had been removed prior to filling... we did ok.  What seems really
> strange is to have a recommendation from Evans that says to use a zero psi
> cap... although they did say it's ok to use one up to about 7psi if you really
> need to have a pressurized system.  Interesting stuff.
>
>      <Marv>
>
>
>
> <daveleonard@cox.net>:
>
> One of the guys at the airport says that "all" the subaru guys are using
> something called MPG instead of Ethylene Glycol/water because it boils at 290
> without need to be pressurized.
>
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