Electrolysis and the Fluctuating Ammeter

Key was the first step in checking electrolysis. Second was being persistent to remove it and finding the root cause.

Thank you so much for posting the whole experience.

This is 76 mV or .076 volts. My system: Reverse osmosis water, Justice Brothers Super Radiator Cooler (RC22p), and Justice Brothers Cooling System Protector (CSP/1p)

Two year later it was in the mid 80's mV. I had to drain it to remove a cylinder head.