[FireSale]

Use water only. I like the wetting agents that claim to increase cooling efficiency but I can't speak to how legal they are at your tracks.

You need distilled water only, not bottled drinking water. It's on the supermarket shelf in jugs. Distilled water has had all of the minerals that contribute to rust removed by boiling and condensing back to the liquid state. It's what my mother used to use in her steam iron before all this Teflon stuff.

Dale