A gallon of pre-mix is mostly water, and water is heavy, expensive to ship and available locally. An 8 oz concentrate that makes a gallon changes the economics completely, and it lets you choose your own water quality rather than inheriting whatever was bottled months ago.
· True — Transparent
Concentrate · Transparent · Daily driver
True — Transparent
Low-conductive transparent concentrate. Yields a gallon. PrimoPrep included.
8ozThe whole bottle
1galDI or distilled water
1galFinished coolant
Buy True$29.99
12 colors7 of them UV reactive
PrimoPrep2 oz included in the box
24/7No duty-cycle limit
6 monthsUse the mix within six months
01
Why measure it
One bottle, one gallon. The color lands the same every time.
Mix into DI
DI over distilledLower conductivity, no dissolved solids. Distilled works, but DI is the better base.
One color per fill
Never blend True colorsTwo True colors mixed together are not a new color.
Nothing extra
No additives on topNo dyes, no biocides, no kill coils, no other coolants.
02
Pick a color
Swipe to see all 12 colors →
- Clear
- Clear/UV Blue
- UV Blue
- Electric UV Blue
- Steel Blue
- UV Green
- UV Brite Green
- Yellow
- Red
- Blood Red
- UV Pink
- UV Purple
Swatches are on-screen approximations, not a physical color sample.Switching colors later? Run a System Reboot first.
03
Get it in the loop in five steps
- 1
Prep the loop
SysPrep or System Reboot, then the PrimoPrep in the box.
- 2
Leak-test first
On plain water, before you mix anything.
- 3
Mix the whole bottle
All 8 oz into a container that holds over a gallon, then 1 gallon of DI.
- 4
Fill and bleed
Run the pump in bursts. Stop before the reservoir runs dry.
- 5
Reconnect and confirm
Reconnect the 24-pin once every joint is dry.
04
What it goes into, and how a fill ages
✓Use with
- DI water, or distilledDI is the better base.
- Copper, brass, nickel-plated copperThe metals True is formulated for.
- PETG, acrylic, glass, PVC tubingFully compatible.
✕Never with
- AluminumVoids the fluid warranty.
- Kill coils, other coolants, additivesTrue already carries a complete package.
- Another True colorOne color per fill.
Day 1
Fill and bleed24 hours with the pump running. Check every fitting twice.
Week 2
First inspectionFilm, strands or a color shift this early mean the prep was short.
6 months
Top up, inspectTop up with True. Check the radiator fins for debris.
12 months
Drain and serviceFull drain, Rad Clean through the radiators, rinse, refill.
05
The full story
06