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· SysPrep
Pre-treatment · Whole loop · New builds

SysPrep

Everyday pre-treatment. Flushes out what manufacturing left behind, before coolant ever touches metal.

15mlThe whole bottle
1galDI or distilled
48hCirculate, then flush
Buy SysPrep$6.99
New buildsRefills get System Reboot
48 hoursMinimum run time
2 yearsShelf life, unopened
Not a coolantA conditioning step
01

Why the full 48 hours

This is chemistry doing the work, not scrubbing. It needs the full run time.

0 h48 hLonger is fine

Cut short

Debris stays on the surfaces a brush never reaches, and your coolant ends up doing the cleaning.

48 hours or more

Normal use is fine. The heat helps it break debris down faster.

Never mix intoPre-mixed coolants. It oversaturates the inhibitor package.
02

Use it in five steps

  1. 1

    Leak-test first

    SysPrep runs two full days. Test on plain water first.

  2. 2

    Mix the whole bottle

    Into a gallon of DI or distilled, shake 30 s. Or add it to the reservoir.

  3. 3

    Fill, bleed, run 48 h

    Tilt the case to clear air. Normal use is fine.

  4. 4

    Drain and flush

    Until it runs clear with no foam. Debris coming out is the job working.

  5. 5

    Fill next, right away

    PrimoPrep or your coolant. Never leave it on plain water.

Download the prep card
03

What it works with, at a glance

Use with

  • DI or distilled waterA full gallon per bottle.
  • The whole loopBlocks, tubing, fittings and radiators.
  • Rad Clean first, on new radiatorsThen SysPrep on the first fill.

Never with

  • Pre-mixed coolantsIt oversaturates the inhibitor package.
  • A loop that already ran coolantThat job is System Reboot.
  • Use as a coolantIt conditions the loop. It does not protect it.
  • 15ml

    Per gallon

    DI or distilled water.

  • 48h

    Minimum run

    Then drain and flush clear.

  • 2yr

    Unopened

    Shelf life from purchase.

  • Stage 2

    In the sequence

    Rad Clean, SysPrep, PrimoPrep.

04

The full story

A cooling-loop pre-treatment that flushes the debris water-cooling components carry out of manufacturing. It prepares the system for its final coolant by removing residue and buildup from every wetted surface, which is what keeps the coolant that follows from having to do cleaning work it was never formulated for.

05

Other preps and treatments

PrimoChill

Keeping It Cool is the technical library of PrimoChill. Products ship from primochill.com.

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