Can PC coolant expire? Here's how long it can last
A liquid-cooled PC can certainly look cool, but there are hurdles when mixing tech and water. Here's what you need to know to keep your rig running right.
Liquid-cooled personal computers have gained popularity, but these systems require regular maintenance, including coolant replacement. The coolant circulates through hot PC components, absorbing heat and carrying it to the radiator for dissipation. However, coolant doesn't last indefinitely and requires periodic replacement. The primary concern with coolant over time isn't evaporation, though some water may evaporate with extensive use through softer tubes.
Instead, the corrosion inhibitor compound in coolant degrades gradually, leading to corrosion of PC components once depleted. Additionally, the coolant loses its lubricating properties, affecting pump motor and other system parts' functionality. Furthermore, the liquid may develop algae and other impurities, particularly if it contains dyes or other additives, causing clogs and reduced performance.
To maintain optimal performance, it is recommended to replace the coolant supply at least once a year, and more frequently—twice a year or every six months—if using semi-transparent coolant. Signs of degradation include a murky color, haze, grime, or algae in the tubes, reservoir, or water block. Monitoring the CPU temperature periodically is also wise, as a sudden and significant temperature increase may indicate the coolant is no longer effective and needs replacement.
Written by urgent.news from Engadget's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
