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.
What to buy
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Where to buyConfirm the specification in your owner’s manual before buying. Product examples are not a fitment guarantee.
Specifications
| Brand | Castrol |
|---|---|
| Maker | Castrol (bp) |
| Product | Castrol Radicool SF |
| Chemistry | OAT |
| 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 |
| Free-of claims | nitrite-free, silicate-free, phosphate-free, amine-free |
| Not published by the maker | Part numbers, Sizes, Base glycol, Colour, Service life claim, Freeze point, Datasheet. Check the product label or ask the manufacturer. |
| Source | manufacturer page |
| Last checked | 22 October 2026 |
Specs and approvals listed by the manufacturer
- Meets WSS-M97B44-D per Castrol (Ford)
- Meets VW TL 774-F per Castrol (Volkswagen Group)
- Meets MB 325.3 per Castrol (Mercedes-Benz)
- Meets MAN 324 Typ SNF per Castrol (MAN)
- Meets JIS K2234 per Castrol (Japan (JIS))
- Meets Deutz DQC CB-14 per Castrol (Deutz)
- Meets BS 6580 per Castrol (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.
Alternatives that list the same spec
Other coolants whose makers list at least one of the same OEM codes as Castrol Radicool SF. More shared codes first. Match the exact code in your manual, and do not mix chemistries when topping up.
| Product | Same code(s) |
|---|---|
| Castrol Radicool NF Castrol · not published · Concentrate | Deutz DQC CB-14, MAN 324 Typ SNF, MB 325.3, VW TL 774-F +1 |
| ACDelco DEX-COOL Extended Life Coolant (Australia/NZ) ACDelco · OAT · Concentrate | MAN 324 Typ SNF, MB 325.3, VW TL 774-F, WSS-M97B44-D |
| Xstream G30 Antifreeze & Coolant Concentrate Comma · OAT · Concentrate | Deutz DQC CB-14, MAN 324 Typ SNF |
| HD Expert EXTEND Antifreeze/Coolant Recochem · OAT · Premix 50/50 | MAN 324 Typ SNF, WSS-M97B44-D |
| Xstream G30 Antifreeze & Coolant Ready Mixed Comma · OAT · Premix 50/50 | Deutz DQC CB-14, MAN 324 Typ SNF |
| PEAK ORIGINAL EQUIPMENT TECHNOLOGY Concentrate Antifreeze + Coolant for North American Vehicles - ORANGE PEAK · OAT · Concentrate | WSS-M97B44-D |
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.
Related tool
Compare this coolant side by side
Open the comparison →Related products with the same listed chemistry
Related products with the same listed chemistry
- HD Expert EXTEND Antifreeze/Coolant (Recochem, Premix 50/50)
- ACDelco DEX-COOL Extended Life Coolant (Australia/NZ) (ACDelco, Concentrate)
- Turbo Power Extended Life Antifreeze/Coolant (Recochem, Concentrate and Premix 50/50)
- Xstream G30 Antifreeze & Coolant Concentrate (Comma, Concentrate)
- Xstream G30 Antifreeze & Coolant Ready Mixed (Comma, Premix 50/50)
- PEAK ORIGINAL EQUIPMENT TECHNOLOGY Antifreeze + Coolant 50/50 Prediluted for European Vehicles - PINK Check price (PEAK, Premix 50/50)
Vehicle makes linked to this coolant
These make pages explain what each vehicle maker specifies. The reason each one links here is shown next to it. This is not a fitment claim, so check your owner's manual.
- What coolant Ford specifies (the manufacturer lists a spec code from this vehicle maker)
- What coolant Volkswagen specifies (the manufacturer lists a spec code from this vehicle maker)
- What coolant Audi specifies (the manufacturer lists a spec code from this vehicle maker)
- What coolant Mercedes-Benz specifies (the manufacturer lists a spec code from this vehicle maker)
More from Castrol
See every Castrol product we list, with the chemistries and spec codes the maker names, on the Castrol coolant brand page.
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