Built for rebuilding rather than building. Rad Clean flushes the radiators and removes chemical buildup, System Reboot clears dye remnants and residue throughout the loop, and PrimoPrep corrects the pH imbalance copper introduces while preparing the system for a mixed-metal environment. Water-based, environmentally responsible, and safe on plastics, rubbers and acrylic.
· Complete Prep Kit — Existing System
Prep kit · Existing system
Complete Prep Kit — Existing System
The same job on a loop that has already run. Cleans out what the last fluid left behind.
1hRad Clean, radiators
48hSystem Reboot, loop
72hPrimoPrep, final stage
Buy the kit$22.99
3 bottlesRad Clean, Reboot, PrimoPrep
Plus2 plastic fittings and a funnel
RefillsA loop that already ran coolant
No aluminumOr nickel fittings during Rad Clean
01
Three stages, in order
Rebuilding, not building. It cleans out what the last fluid left behind.
Stage 1 · Rad Clean
RadiatorsFlushes them and removes chemical buildup.
Stage 2 · System Reboot
The whole loopClears dye remnants and residue.
Stage 3 · PrimoPrep
pH and copperCorrects the pH swing copper introduces.
02
Use it in five steps
- 1
Drain the old coolant
Catch it in a clear bucket and look at it.
- 2
Rad Clean, then leak-test
Radiators off the loop, then 12 to 24 hours on distilled.
- 3
System Reboot, 48 hours
Flush until every trace of foam is gone.
- 4
PrimoPrep, 72 hours
Drain and do the final rinse.
- 5
Fill, bleed, log the date
Bleed 24 hours. Photograph the reservoir.
03
What it works with, at a glance
✓Use with
- Loops that already ran coolantIncluding Vue and the opaque fluids.
- Distilled or DI water6 gallons or more for the full run.
- The included fittings and funnelTo cap radiators during Rad Clean.
✕Never with
- Aluminum componentsNot compatible.
- Nickel-plated fittings during Rad CleanUse the plastic caps.
- Rushing the flushLeftover foam contaminates the fill.
- 3
Stages
Rad Clean, Reboot, PrimoPrep.
- 6gal+
Water
Distilled or DI for the full run.
- 4–5days
Start to finish
Most of it is circulation time.
- 48 + 72h
Circulation
Reboot, then PrimoPrep.
04
The full story
05
