Quote Originally Posted by ladderman View Post
I use X300 Universal Cleanser, it’s used buy heating engineers to Flushes out flux and installation debris from new indirect central heating systems.

I spoke with the tech department at Sentinel and they told me it wouldn’t harm my watercooling parts.

So I used it to clean my PA120.3 & BIP before installing, and it did a great job.

I’m just about to strip my system down to do a full clean, so I’ll use it again.

http://www.sentinel-solutions.net/en...g-Chemical.pdf
Do you leave it to soak or flush it through? It's pretty cheap so if it does a good job without harming any hardware i might give it a go as well.

Edit: just read the .pdf and it has instructions!