YMMV, but the mayhems pastel I use in my rig settles quickly. My pc goes to sleep after 30 minutes of inactivity. When I get home from work (about a 10 hour day with drive time factored in) the fluid in the lines leading to my cpu block is almost clear. Once I wake it up, it takes about 10 seconds to mix back in. I have been running this fluid for a couple of months now, and it doesn't show any signs of clumping or clogging. Of course, this is 10 hours vs 3 months, and I have a sample size of 1.
Before I got the mayhems stuff, I tried EK's pastel fluid. It didn't last long at all. In the first couple of weeks it broke down into what I can only describe as snot - long stringy clumps of "nano particles". It took a full tear down and scrubbing to get it all cleaned out.
If I was in your situation, I'd probably yolo it, hit the power button and see what happens - but be ready to shut it off at the first sign of trouble. This is absolutely NOT the manufacturer recommended procedure, but you can tell yourself you're doing it "for science".
Gigabyte x570 Aorus Pro Wifi
Sapphire Radeon RX 5700 XT
Crucial Ballistix Elite DDR4 3600
Sabrent Rocket NVMe PCIe 4.0 M.2 2280
Sabrent Rocket NVMe PCIe M.2 2280
Seasonic FOCUS Plus 750
EK-KIT Classic RGB P360
EK-Vector Radeon RX 5700 +XT RGB - Nickel + Plexi
Arctic P12 PWM PST
XSPC G1/4" Inline 10k Sensor, Chrome
EK-CryoFuel Solid Cloud White (Premix 1000mL)
Lian-Li PC O11 Dynamic (white)
Windows 10 Pro
Audio Technica ATH-M50x
NVIDIA GeForce GTX 970M
Samsung 850 EVO
HGST Travelstar 7K100
Microsoft Sidewinder X4
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