A flush-style cleanser for a loop that has already run coolant and needs to come back to zero without a teardown. It removes debris and residue and, the part no general cleaner does, lifts color back out of components stained by a previous fluid, leaving the system clean, clear and ready for any type of coolant.
System Reboot
For a loop that has already run coolant. Lifts residue and pulls old dye staining back out.
Why the full 48 hours
It pulls residue and dye staining back out of the surfaces it plated onto. That needs the full run time.
Cut short
Residue stays behind and becomes a contaminant in your next fill.
48 hours or more
Normal use during the window is fine.
Use it in five steps
- 1
Drain the old coolant
Catch it in a clear bucket. It tells you what the last fill did.
- 2
Mix the whole bottle
Into a gallon of DI or distilled, or straight into the reservoir.
- 3
Fill, bleed, run 48 h
Tilt the case to clear air, then let it circulate.
- 4
Flush to zero foam
Expect extra passes after Vue or another opaque fluid.
- 5
Fill next, right away
PrimoPrep or your coolant. Never leave it on plain water.
What it works with, at a glance
✓Use with
- Loops that ran Vue or an opaque fluidWhat it is built for.
- DI or distilled waterA full gallon per bottle.
- Nickel-plated blocksLifts staining without attacking the plating.
✕Never with
- A brand-new loopThat job is SysPrep.
- Skipping the flushLeftover residue contaminates the next fill.
- Use as a coolantIt cleans the loop. It does not protect it.
- 15ml
Per gallon
DI or distilled water.
- 48h
Minimum run
Then drain and flush to zero foam.
- 2yr
Unopened
Shelf life from purchase.
- Stage 2
In the sequence
Rad Clean, Reboot, PrimoPrep.