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Primochill Coolant is NASTY! 15-day review

My recent upgrade also involved a loop rebuild, during which pretty much overhauled the entire loop. My old loop used deionized with a silver kill coil, and I never had any real issues with it worth mentioning - coolant stayed clean and temps were good.

 

- EK ROG CH8 Dark Hero Monoblock (new)

- EK Monarch X4 RAM blocks (reused but with full disassembly cleaning)

- EK 6900XT full-cover block (new)

- Alphacool NexXxos UT60 480 RAD (reused, thorough flushed, left to dry fully before being refilled)

- Primochill RSX Fittings

- Primochill Res (new 360mm, forgot exact model)

- D5 pump

 

With the rebuild, I moved from colored tubing and water to clear tubing and colored water. I'm definitely one of the "water is best" people, but I thought "hey, how bad can it be? plenty of youtubers use coolant," and went with a gallon of Primochill True Opaque in pink. Man was I wrong. Within 15 days I've been getting this white frost-like sediment that clings to the tubes and the "opaque" coolant is becoming visibly less opaque by the day.

 

And before anyone asks, no I am not mixing metals, at least nothing really bad. Nickel and copper in this loop, no aluminum. Primochill also advertises this coolant as corrosion and sludge inhibiting. The kill coil was also removed.

 

Pictures speak for themselves:

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PC 0: Pinky 2.0

Ryzen 9 5950x — 64GB G.Skill Ripjaws 5 @3600Mhz CL14-13-13-28-288 — ROG Crosshair 8 Dark Hero — RX 6900 XT — Hardline Loop (CPU/Motherboard + GPU + RAM + Aquaero 5LT) — Sabrent Rocket 4.0 2TB M.2 — Samsung PM961 1TB M.2 — WD Blue 4TB HDD — Corsair AX1500i — Thermaltake Core P5 — Win10P

 

PC 1: Pinky (Yes that is her name) Here's the build

Xeon E5-1680V3 — 64GB G.Skill Ripjaws 4 @2400Mhz — MSi X99A Godlike Gaming Motherboard — GTX 980Ti SLI(2-WAY) — Full Custom Hardline Water Cooling — Samsung 950Pro 512GB PCIe OS SSD — Seagate 2TB 7200RPM Storage HDD — Corsair RM1000 — Thermaltake Core P5

 

PC 2: Red Box/Scarlet Overkill (Dual Xeon)

Xeon E5-2687W x2 — 96GB Kingston DDR3 ECC REG @1333Mhz — EVGA Classified SR-X Dual CPU — GTX 1070 SLI(2-WAY) — Full Custom Hardline Water Cooling — Samsung 750 EVO 256GB OS SSD — Seagate 2TB 2.5" Storage HDD x3 — Self-Built Case

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Coolant temp is kept under 45c. The loop is controlled using an aquaero based off coolant-ambient delta. Certainly no overheating.

 

imo there is no excuse for this to happen within 15 days of filling.

 

Everything is gonna have to be disassembled fully and wiped down. F.

PC 0: Pinky 2.0

Ryzen 9 5950x — 64GB G.Skill Ripjaws 5 @3600Mhz CL14-13-13-28-288 — ROG Crosshair 8 Dark Hero — RX 6900 XT — Hardline Loop (CPU/Motherboard + GPU + RAM + Aquaero 5LT) — Sabrent Rocket 4.0 2TB M.2 — Samsung PM961 1TB M.2 — WD Blue 4TB HDD — Corsair AX1500i — Thermaltake Core P5 — Win10P

 

PC 1: Pinky (Yes that is her name) Here's the build

Xeon E5-1680V3 — 64GB G.Skill Ripjaws 4 @2400Mhz — MSi X99A Godlike Gaming Motherboard — GTX 980Ti SLI(2-WAY) — Full Custom Hardline Water Cooling — Samsung 950Pro 512GB PCIe OS SSD — Seagate 2TB 7200RPM Storage HDD — Corsair RM1000 — Thermaltake Core P5

 

PC 2: Red Box/Scarlet Overkill (Dual Xeon)

Xeon E5-2687W x2 — 96GB Kingston DDR3 ECC REG @1333Mhz — EVGA Classified SR-X Dual CPU — GTX 1070 SLI(2-WAY) — Full Custom Hardline Water Cooling — Samsung 750 EVO 256GB OS SSD — Seagate 2TB 2.5" Storage HDD x3 — Self-Built Case

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4 hours ago, hihihi8 said:

Coolant temp is kept under 45c. The loop is controlled using an aquaero based off coolant-ambient delta. Certainly no overheating.

 

imo there is no excuse for this to happen within 15 days of filling.

 

Everything is gonna have to be disassembled fully and wiped down. F.

Opaque coolants are very poorly documented and so it is impossible to know what kind of incompatibilities you run into. I would recommend you to try a clear colored (optional) coolant.

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The only opaque fluid I feel like trying out is the new white XTR from Mayhem's (not sure its in USA yet). Other than that, in general they just seem like a bad idea.

 

I'd stick to either water (and instead of silver, run biocide and inhibitors in the water), or else clear coolants otherwise. Can also dye the water. Won't be opaque, but will give you some color if you really want it.

 

I'd stay away from EK Cryofuel though. The newer Cryofuel, even the clear, is known to fall out and gunk up. The older Cryofuel was fine as I believe it was rebranded Mayhems. Corsair is also a rebranded and slightly reformulated Mayhems X1.

 

Modmymods also makes a coolant that I have heard good things about and it tends to run cheaper since its made in the USA.

 

If you do run distilled water though, good luck with EK when your plating flakes off your blocks and they blame your water instead of their crappy plating.

CPU: Intel Core i7-4790k || GPU: ASUS GTX 980 Strix || Memory: Corsair Vengeance Pro 16GB DDR3-2400 || Motherboard: ASUS Z97-DELUXE || SSD: Crucial M550 512 GB (OS Drive) || Hard Drives: WD Black 2 x 3TB (Games/Storage Drives) || PSU: Corsair AX750 || Monitor: LG 32GK650F-B  || Cooling: EK Supremacy EVO || D5 X-RES Top 100 w/ D5 Vario || XSPC EX240 x 2 || Corsair SP120 x 5 / AF120 x 1 || Case: Corsair Carbide Air 540 || Keyboard: Corsair K70 || Mouse: Razer Naga Epic || OS: Windows 8.1 Pro 64-bit ||

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Mayhem X1 Clear if you want reliability.  Opaque fluids are always settling out eventually or clogging blocks or whatever.

Workstation: 10850K @ 5.1Ghz || Gigabyte Z490 Ultra || ASUS TUF 3090 650W shunt, active backplate || G.Skill DDR4-3800 XMP 4x8GB || Corsair AX1500i || 11 gallon whole-house loop.

LANRig/GuestGamingBox: 9900KF @ 4.9Ghz || Gigabyte Z390 Aorus Master || Gigabyte Gaming G1 1080Ti || Corsair SF600 || CPU+GPU watercooled 280 rad push only.

Server Router (Untangle): 8350K @ 4.7Ghz || ASRock Z370 ITX || 2x8GB || PicoPSU 250W, running on AX1200i from Server Storage || 11 gallon whole-house loop.

Server Compute: E5-2696v4 || Asus X99 mATX WS || LSI 9280i + Adaptec + Intel Expander || 5x10TB Seagate Enterprise Raid 6, 4x8TB Seagate Archive Backup, Corsair AX1200i (drives)  || 11 gallon whole-house loop.

Laptop: HP Elitebook 840 G3 (Intel 8350U), Razer Blade Stealth 13" 2017 (Intel 8550U)

Shelved: 9900 nonK || ASRock Z390 Taichi Ultimate || Gigabyte Z270 Gaming 9 || EVGA Titan X (Maxwell) || GTX 780

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idle temperatures have now increased by 25c.

PC 0: Pinky 2.0

Ryzen 9 5950x — 64GB G.Skill Ripjaws 5 @3600Mhz CL14-13-13-28-288 — ROG Crosshair 8 Dark Hero — RX 6900 XT — Hardline Loop (CPU/Motherboard + GPU + RAM + Aquaero 5LT) — Sabrent Rocket 4.0 2TB M.2 — Samsung PM961 1TB M.2 — WD Blue 4TB HDD — Corsair AX1500i — Thermaltake Core P5 — Win10P

 

PC 1: Pinky (Yes that is her name) Here's the build

Xeon E5-1680V3 — 64GB G.Skill Ripjaws 4 @2400Mhz — MSi X99A Godlike Gaming Motherboard — GTX 980Ti SLI(2-WAY) — Full Custom Hardline Water Cooling — Samsung 950Pro 512GB PCIe OS SSD — Seagate 2TB 7200RPM Storage HDD — Corsair RM1000 — Thermaltake Core P5

 

PC 2: Red Box/Scarlet Overkill (Dual Xeon)

Xeon E5-2687W x2 — 96GB Kingston DDR3 ECC REG @1333Mhz — EVGA Classified SR-X Dual CPU — GTX 1070 SLI(2-WAY) — Full Custom Hardline Water Cooling — Samsung 750 EVO 256GB OS SSD — Seagate 2TB 2.5" Storage HDD x3 — Self-Built Case

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