Just be mindful that EK Cryofuel does not suggest using any type of cleaning solution for blocks/rads like Mayhems Blitz, Vinegar/water or Primochill Reboot. That alone keeps me away from using it but there are many people who don't have any issues with it.
I personally use Mayhems Pastel White. I've used it for about 6+ years and even ran it for 3 years without maintenance. My EK nickel-plated blocks stayed clear without any clogs (after 3 years of no maintenance) when I changed up some watercooling components last year.
The most important thing with opaque fluids is that you MUST prep your loop very well and many people fail to do this. My prep includes washing/flushing all components with hot sink water, flushing with distilled water 3+ times, running Primochill Reboot for 12-24 hours, flushing with distillled water 3+ times again, then filling it up with Pastel+distilled water. The main goal is to keep everything as PH-neutral as possible without all the gunk from the factory (residue/oils/etc). It's a lot of up front work, but it means I don't have to touch my system for 3-4 years until my next upgrade cycle.