September 2026, Synano has published the full white paper from its nano-oil validation with GRC and Grundfos. This immersion cooling white paper brings the raw data, the test methods and every result together in one document. The headline results are already in the case study. The white paper now shows the complete analysis behind them.
GRC ran the test in a Pico single-phase immersion tank with a live Dell PowerEdge R650 server and two 270 W CPUs. Each week the system ran at 540 W across flow rates from 30 to 45 L/min and fan speeds from 30 to 100%. Over 12 weeks, Synano nano-oil lowered the thermal resistance between heatsink and oil by 9 to 15% compared with the base GTL oil. The gain held steady from the first week to the last. CPU temperatures were lower with nano-oil than with base oil.
After the 12 weeks, GRC drained the tank and ran the base oil again. The results matched the first base oil test. The nano-oil had no effect on the system or the server.
In parallel, Grundfos tested the fluid in horizontal multistage CME3-3 pumps. Two pumps ran continuously, one of them for more than three months. The mechanical shaft seals showed no leakage. The stainless steel hydraulic parts showed no wear. The Viton A elastomers passed every compatibility test.
The white paper also lists the fluid properties. Kinematic viscosity dropped by 15% and thermal conductivity rose by 3%.
For data center operators, lower thermal resistance means cooler CPUs at the same load. That headroom can support higher power density, or the same temperatures at lower pump power. The tested server and tank needed no hardware changes.
Every number in this immersion cooling white paper is now open to review.
Credits: Sharven Shenvi Kerkar and CTO Dr. Alexander Korobko, with the GRC and Grundfos teams.
