A few years ago, I used to regularly fill up my taps with the coolant used to clean the pump.
That coolant wasn’t as powerful as the water that comes out of the pumps, so the pump was constantly running.
But when it got cold outside, the coolants became very cold, so it was very inconvenient to run the coolans constantly.
So I decided to replace them with mineral water.
It was easy, and cheaper than buying a new pump.