Quick answer
Castrol coolant, in brief. Castrol: Castrol ON PG25 (OAT) and PG25T (IAT), pre-diluted direct-to-chip fluids. Reported qualifications: Castrol ON PG25 and PG25T announced as validated for NVIDIA AI infrastructure (18 Aug 2026); Castrol CORE Cooling Solutions named by NVIDIA among DSX Ready coolant partners (Oct 2026). This is an independent profile with cited sources. Details we couldn't verify are marked "not published".
Key takeaways
- Independent profile, no affiliation or endorsement.
- Segment: Data-center liquid cooling.
- Headquarters: Pangbourne, United Kingdom.
Confirm the exact fluid and qualification with your CDU or hardware supplier before specifying.
On this page
Castrol at a glance
| Item | Detail (sourced) |
|---|---|
| Segment | Data-center liquid cooling |
| Headquarters | Pangbourne, United Kingdom |
| Ownership / corporate | Part of bp |
| Fluid base | Propylene glycol (PG25) |
| Publicly reported qualifications | Castrol ON PG25 and PG25T announced as validated for NVIDIA AI infrastructure (18 Aug 2026); Castrol CORE Cooling Solutions named by NVIDIA among DSX Ready coolant partners (Oct 2026) |
| Pricing | not published |
| Datasheet values beyond those quoted | not published |
Castrol coolant products
Castrol ON PG25 (OAT) and PG25T (IAT), pre-diluted direct-to-chip fluids.
Related tool
Comparing data-center fluids?
Open comparator →Questions to ask before specifying
- Which hardware (cold plate, CDU) vendor approvals does the exact product hold?
- Is it supplied ready to use (e.g. PG25) or as concentrate?
- What are the fluid maintenance limits (concentration, pH, conductivity, inhibitor level)?
- What sampling and top-up program is offered?
- Lead time and regional supply?
How to compare it with alternatives
Use the data-center coolant comparator and the NVIDIA DSX Ready list. Background: what is PG25?, direct-to-chip vs immersion, CDU coolant maintenance, and the supplier directory.
Frequently asked questions
Frequently asked questions
Is Coolant.com affiliated with Castrol?
No. This is an independent profile based on public sources.
What coolant does Castrol make?
Castrol ON PG25 (OAT) and PG25T (IAT), pre-diluted direct-to-chip fluids.
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Request sourcing help →How we source this page
- Facts come from manufacturer pages, datasheets, owner's manuals and standards bodies, linked under Sources.
- We do not test products, and no brand pays to be listed or ranked. Advertising and affiliate links are labelled and never change the data.
- Anything we could not find is marked "not published" rather than guessed. Spotted an error? Tell us.