Metal Refinery deleting half the coolant (400kg)

You will need to upload a save file. I have used polluted water for metal refinery before and never experienced this issue.

@ghettomon : I guess you just don't see that 400 Kg of liquid is split in a distinct pile.

If you pay attention, when the refinery have more than 100 Kg of metal, and have an order to refine it, the amount is split into 100 Kg, and another pile with the remaining amount.

The same operation should occur with the liquid.

Edited February 17, 2019 by Gwido

@Gwido: Thanks for your hint.

The needed coolant is indeed "set aside" along with the ingredients. The visual meter is misleading though.