Summary
Castrol Radicool SF coolant data, from Castrol's own source. Castrol Radicool SF is a concentrate OAT coolant listed by Castrol (bp). The manufacturer lists 7 OEM or industry spec codes, including WSS-M97B44-D.
Specifications
| Brand | Castrol |
|---|---|
| Maker | Castrol (bp) |
| Product | Castrol Radicool SF |
| Part numbers (as published) | not published |
| Sizes (as published) | not published |
| Chemistry | OAT |
| Base glycol | not published |
| Colour | not published |
| Premix or concentrate | Concentrate |
| OEM / industry specs listed | WSS-M97B44-D, VW TL 774-F, MB 325.3, MAN 324 Typ SNF, JIS K2234, Deutz DQC CB-14, BS 6580 |
| ASTM standards listed | ASTM D3306, ASTM D4985, ASTM D6210 |
| Service life claim | not published |
| Freeze point (as published) | not published |
| Free-of claims | nitrite-free, silicate-free, phosphate-free, amine-free |
| Datasheet | not published |
| Source | manufacturer page |
| Last checked | 22 October 2026 |
Specs and approvals listed by the manufacturer
- Meets WSS-M97B44-D per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (Ford)
- Meets VW TL 774-F per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (Volkswagen Group)
- Meets MB 325.3 per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (Mercedes-Benz)
- Meets MAN 324 Typ SNF per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (MAN)
- Meets JIS K2234 per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (Japan (JIS))
- Meets Deutz DQC CB-14 per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (Deutz)
- Meets BS 6580 per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (British Standard)
- Meets ASTM D3306 per Castrol (industry test standard)
- Meets ASTM D4985 per Castrol (industry test standard)
- Meets ASTM D6210 per Castrol (industry test standard)
Manufacturer wording: Meets or exceeds industry standards:
"Meets X per manufacturer" is our shorthand for any of the manufacturer's own phrases: meets, meets or exceeds, approved, or recommended for applications requiring. It is the manufacturer's claim, not an approval by Coolant.com or by the vehicle maker. Codes are copied as published. Some sources list codes for compatibility rather than formal approval. The wording above shows which.
Compatibility notes
- If your owner's manual calls for WSS-M97B44-D, Castrol lists that code for this product. Read the exact wording above, and confirm against your manual.
- Chemistry is listed as OAT. Mixing different chemistries can shorten coolant life. See OAT vs HOAT vs IAT and use the mixing checker before topping up.
- Sold as a concentrate: dilute with distilled or deionised water as the label directs. See premix vs concentrate and the freeze and boil calculator.
Note: UK product. Castrol's page does not name the inhibitor technology; OAT here is INFERENCE from the silicate-, nitrite-, amine- and phosphate-free formula and the TL 774-F / MB 325.3 specs.
Where to buy
We did not find a retailer link on the manufacturer's page that we could check. Try the manufacturer's own site: Castrol product page.
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Sources
- Castrol product page (status on 22 Oct 2026: 200)