Question Changing AIO fluid

Apr 7, 2025
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Hey, my AIO pump stopped working because it got clogged. I fixed it, and since I don’t have coolant available right now, I had to temporarily use deionized water. Is there anyone who can help me make a water mixture that works similarly to the available coolants?
 
You can certainly buy off the shelf PC coolant from many sources.

You can use distilled water with a biocide, again something you can buy off the shelf.

Most AIO are mixed metal solutions with a copper chill plate and an aluminum radiator. In which case you want a coolant with an corrosion inhibitor. Again, you will find many off the shelf marketed products.

AIOs generally only last about 5 years, so I wouldn't put too much effort and money into this.