In a message dated 2/17/02 12:49:43 PM, developtrust@HOME.COM writes:

<< What is the rationale for distilled water. >>

The cooling system requires deionized water.  Although I would think that
distilled water is also deionized, I slept through too many analytical
chemistry classes to have any meaningful knowledge of the matter.  I imagine
that deionized H2O allows the additive components of the antifreeze to
function as was intended by the chemists' formulation.

Also, deionized H2O is offered by antifreeze manufacturers at inflated prices.

Rich