Lubricant company, Castrol, has had two of its direct-to-chip cooling fluids – Castrol ON PG25 and PG25T – validated for NVIDIA AI factory and data centre infrastructure.
The validation involved a review of the products’ technical performance and material compatibility, alongside Castrol’s business and global supply-chain resilience.
Castrol’s executives believe this strengthens the company’s position in liquid cooling as AI drives demand for more powerful, higher-density data centres.
“As AI infrastructure scales, the industry needs cooling solutions that are effective, practical to deploy and reliable over the long term. The inclusion of Castrol ON PG25 and PG25T within NVIDIA-validated AI Factory Infrastructure gives customers added confidence in both the fluids’ performance and Castrol’s ability to provide consistent global support across markets. It is an important step towards making liquid cooling a dependable part of AI factory design and operation,” said Peter Huang, Global President of Thermal Management & Data Centres at Castrol.
Castrol ON PG25 and PG25T were validated following a technical review covering corrosion resistance, thermal stability, dilution-water quality, propylene glycol base-fluid purity and compatibility with wetted materials, including metals, plastics, seals and other components that come into contact with fluid inside a liquid-cooling system.
“We evaluate every thermal management fluid under rigorous test conditions before it reaches the market. The validation from NVIDIA confirms that PG25 (OAT) and PG25T (IAT) hold up to that standard, even at the scale and intensity of today’s AI infrastructure,” added Sung A. Kim, Data Centre Global Technology Manager at Castrol.





