Every dye and pigment is additional chemistry in the fluid, and additional chemistry is additional opportunity for something to drop out of suspension, plate onto a surface, or shift pH. Pure removes that variable entirely. If your priority is a loop that behaves predictably under sustained load rather than one that photographs well, this is the trade you want.
· Pure
Pre-mix · Clear · Daily driver
Pure
Clear, low-conductive performance coolant. Ready to pour, no mixing.
PrepSysPrep or Reboot, then PrimoPrep
32ozStraight from the bottle
24/7Built for sustained load
Buy Pure$13.95
No colourNothing between the loop and the numbers
Low conductiveA safety measure, keep it dust-free
12 monthsService interval, sooner if temps drift
Nothing on topNo Liquid Utopia, no additives
01
The top-up rule
A couple of ounces of DI water to top up is fine. Past that, top up with Pure.
0 ozA couple of ouncesEvery month, adding up
A couple of ounces
Fine. Some evaporation through soft tubing is normal.
More than that, or every month
Every ounce of water replaces an ounce of coolant. A loop topped up with water every month is slowly turning into water: thinner colour, thinner inhibitors.
Low conductiveA safety measure, not a licence. Keep the system clean and dust-free.
02
Get it in the loop in five steps
- 1
Leak-test on distilled
Plain distilled, PSU jumpered, 12 to 24 hours.
- 2
SysPrep or System Reboot
SysPrep on a new build, Reboot on a loop that ran coolant. 48 hours, then flush.
- 3
PrimoPrep, then flush
72 hours to stabilise pH before the permanent fill.
- 4
Fill and bleed
Pour Pure straight in and bleed for 24 hours.
- 5
Inspect at week two
Film, strands or a colour shift this early mean the prep was short.
03
What it goes into, and how a fill ages
✓Use with
- Copper, brass, nickel-plated copperThe metals Pure is formulated for.
- PETG, acrylic, glass, PVC tubingFully compatible.
- A couple of ounces of DI to top upPast that, top up with Pure.
✕Never with
- Liquid Utopia or any additiveOversaturates the formulation.
- AluminumGalvanic corrosion against copper, brass and nickel.
- Fully-coated third-party fittingsThe coating can leach into the fluid over time.
Day 1
Fill and bleed24 hours with the pump running. Check every fitting twice.
Week 2
First inspectionFilm, strands or a colour shift this early mean the prep was short.
6 months
Top up, inspectTop up with Pure. Check the radiator fins for debris.
12 months
Drain and serviceFull drain, Rad Clean through the radiators, rinse, refill.
04
The full story
05
