Thermaltake CL-W246-OS00WT-A P1000 White Coolant 1000ml — main product image

Thermaltake CL-W246-OS00WT-A P1000 White Coolant 1000ml

Thermaltake

Thermaltake CL-W246-OS00WT-A P1000 White Coolant 1000ml

Name: Thermaltake CL-W246-OS00WT-A P1000 White Coolant 1000ml
Brand: Thermaltake
SKU: CL-W246-OS00WT-A

★★★★★4.6 (399 reviews)

Engineered low-viscosity coolant that cuts airlock risk and delivers 26% better flow than competing pastel formulas.

$24.74*

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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Thermaltake P1000 Pastel Coolant in white delivers 1000ml of opaque, pre-mixed cooling fluid engineered specifically for custom water cooling loops. Its standout specification is viscosity — at 20°C it flows 26.4% more freely than competing pastel formulas, and 25.8% more freely at 40°C. In practical terms, this means less resistance through radiators and micro-channel blocks, reduced pump strain, and marginally quieter operation. The formula includes a surface tension optimizer that breaks down the meniscus effect during filling, which directly addresses one of the most common frustrations in custom loop assembly: persistent air pockets that resist bleeding.

This coolant is built for enthusiasts running soft-tubing or hardline custom loops with mixed-metal components. The anti-corrosive additives protect copper, nickel, and brass, while the non-flammable, biodegradable base keeps the formula safe to handle and dispose of responsibly. The white pastel finish delivers a clean, opaque aesthetic for builds where visual presentation matters — it pairs well with RGB lighting and contrasting tubing. The trade-off, as with all pastel coolants, is maintenance discipline: Thermaltake recommends a full drain and flush every 12 months to prevent pigment settling and maintain corrosion protection. Builders who prefer longer maintenance intervals may want to weigh that commitment against clear coolant alternatives.

Key Features

BETTER FORMULA - By adding a liquid surface tension optimizer the P1000 Pastel Water Cooling Solution Series minimizes the risk of airlock

VIVID COLORS - Comes in five non-transparent colors Red Blue White Green and Yellow The latest TT formula ensures color saturation stability and duration

FLOW LIKE PURE WATER - Low viscosity enables its effective flow At 20°C P1000 Pastel Coolant has 26 4% lower viscosity than other coolant and 25 8% lower at 40°C

ANTI-CORROSIVE SOLUTION - Non-flammable and provides great protection for the entire cooling system from corrosion

- Produced with the environment in mind P1000 is made with biodegradable materials and does not pollute the environment or bio accumulates

2 YEAR

Specifications

Brand

Thermaltake

Model

CL-W246-OS00WT-A

Capacity

1000 ml

Color

White (Pastel/Opaque)

Type

Pre-mixed Pastel Coolant

Anti-Corrosion

Yes

Anti-Freeze

Yes

Airlock Reduction

Surface Tension Optimizer

Viscosity (20°C)

26.4% lower than standard coolants

Viscosity (40°C)

25.8% lower than standard coolants

Flammability

Non-flammable

Biodegradable

Yes

Warranty

2 Years

Pros & Cons

👍 Pros

26.4% lower viscosity at 20°C than competing coolants reduces pump load and improves flow through restrictive blocks
Anti-corrosive formula protects mixed-metal loops including copper, nickel, and brass without degrading O-rings
Surface tension optimizer actively reduces airlock formation during filling, simplifying the bleeding process
Biodegradable, non-flammable composition meets environmental standards without sacrificing thermal transfer performance
Two-year shelf life backed by Thermaltake warranty provides confidence in long-term stock and scheduled maintenance

👎 Cons

Pastel pigment particles can settle in micro-fin water blocks over time, requiring disciplined flush intervals
Opaque white color makes it difficult to visually inspect for contaminants or biological growth inside the loop
1000ml volume may fall short for large dual-radiator builds, requiring purchase of a second bottle
12-month recommended replacement cycle adds recurring cost compared to clear distilled water and biocide setups
Color saturation can fade noticeably in high-temperature loops running above 40°C for extended periods

Frequently Asked Questions

Is this coolant compatible with copper, nickel, and brass fittings commonly used in custom loops?

Yes. The P1000 uses an anti-corrosive formula designed to protect mixed-metal loops including copper, nickel, and brass components. It will not degrade O-rings or acrylic reservoirs under normal operating conditions.

How does the lower viscosity actually affect loop performance?

At 20°C, the P1000 has 26.4% lower viscosity than competing coolants, which means your pump works less to move fluid through the loop. This translates to slightly lower pump noise and marginally better flow rates through restrictive blocks and radiators.

How often should the P1000 coolant be replaced?

Thermaltake recommends replacing the coolant every 12 months to maintain optimal color saturation and corrosion protection. The pastel pigments can settle or degrade over time, particularly in high-temperature loops.

Will this coolant clog micro-fin CPU or GPU water blocks?

Pastel coolants carry suspended particles for their opaque appearance, which means there is some risk of sediment buildup in very fine micro-fin channels over extended use. Regular maintenance and flushing at the recommended interval minimizes this risk.

Is 1000ml enough to fill a typical custom loop?

For a standard single-radiator loop with a CPU block, one 1000ml bottle is usually sufficient. Dual-radiator builds or loops with GPU blocks and larger reservoirs may require a second bottle.