"Joe Glisson" <drfactotum@YAHOO.COM> wrote

> I am using the Prestone Low Tox brand coolant (propylene glycol) - it's
the
> one that's less toxic to dogs and cats. I may be wrong but my
understanding
> is that this brand is phosphate free and the color is green. The auto
parts
> store folks assure me it is phosphate free and the container states it
> protects alum heads - if anyone has different info I'd sure like to hear
> about it. Joe
>

Just look on the container.  It will clearly state if it is phosphate-free.

Budd Premack
86 Syncro, 88 Wolfsburg
Land of Sky-Blue Waters