Re: [DML] Re: Sight glass coolant tank, etc
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Re: [DML] Re: Sight glass coolant tank, etc



On Aug 23, 2007, at 12:12 AM, content22207 wrote:

> Regarding steam from a hot radiator (someone else's post): a properly
> functioning cooling system does not contain steam. The water pump
> can't move vapor. It is possible to boil coolant, as we've all seen on
> the side of the road, but remember that the antifreeze and pressure
> combine to raise its boiling point to 260 degrees or so.

This is all correct, but beside the point. The reason that cooling  
systems
are pressurized is to raise the boiling point of the coolant to  
permit higher
temperatures without producing steam. Open the cap while hot, the  
pressure
drops suddenly, the boiling point lowers, and you have instant steam-- 
lots of it.
And true steam (as opposed to mere hot water vapor)  is nasty stuff.
Just don't do it!

--Pete Lucas
   VIN #06703




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