Summary
Shell Coolant Longlife Plus Ready to Use coolant data, from Shell's own source. Shell Coolant Longlife Plus Ready to Use is a premix (ready to use) Si-OAT coolant listed by Shell (Shell Lubricants). The manufacturer lists 8 OEM or industry spec codes, including VW TL 774-G.
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 | Shell |
|---|---|
| Maker | Shell (Shell Lubricants) |
| Product | Shell Coolant Longlife Plus Ready to Use |
| Part numbers (as published) | 15-601 |
| Chemistry | Si-OAT |
| Colour | Pink |
| Premix or concentrate | Premix (ready to use) |
| OEM / industry specs listed | VW TL 774-G, MB 326.5, MB 326.6, MAN 324 Typ Si-OAT, Cummins CES 14603, BS 6580, JIS K2234, SAE J1034 |
| ASTM standards listed | ASTM D3306, ASTM D4985, ASTM D6210 |
| Freeze point (as published) | -37 °C (ASTM D1177) |
| Datasheet | datasheet |
| Not published by the maker | Sizes, Base glycol, Service life claim, Free-of claims. Check the product label or ask the manufacturer. |
| Source | manufacturer page |
| Last checked | 22 October 2026 |
Specs and approvals listed by the manufacturer
- Meets VW TL 774-G per Shell (Volkswagen Group)
- Meets MB 326.5 per Shell (Mercedes-Benz)
- Meets MB 326.6 per Shell (Mercedes-Benz)
- Meets MAN 324 Typ Si-OAT per Shell (MAN)
- Meets Cummins CES 14603 per Shell (Cummins)
- Meets BS 6580 per Shell (British Standard)
- Meets JIS K2234 per Shell (Japan (JIS))
- Meets SAE J1034 per Shell (SAE)
- Meets ASTM D3306 per Shell (industry test standard)
- Meets ASTM D4985 per Shell (industry test standard)
- Meets ASTM D6210 per Shell (industry test standard)
Manufacturer wording: Shell TDS (Europe, v1.6, Aug 2023), all "(meets requirements)": ASTM D3306, D4985, D6210; BS 6580; Cummins CES 14603; MB-Approval 326.5/326.6; MAN 324 Typ Si-OAT; VW TL-774 G; AFNOR NFR 15-601; JIS K2234; NC 956-16; SAE J1034.
"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 Shell Coolant Longlife Plus Ready to Use. More shared codes first. Match the exact code in your manual, and do not mix chemistries when topping up.
| Product | Same code(s) |
|---|---|
| Xstream G40 Antifreeze & Coolant Ready Mixed Comma · Si-OAT · Premix 50/50 | Cummins CES 14603, MAN 324 Typ Si-OAT, MB 326.6, VW TL 774-G |
| Shell Coolant Longlife Plus Concentrate Shell · Si-OAT · Concentrate | Cummins CES 14603, MAN 324 Typ Si-OAT, VW TL 774-G |
| Xstream G40 Antifreeze & Coolant Concentrate Comma · Si-OAT · Concentrate | Cummins CES 14603, MAN 324 Typ Si-OAT, VW TL 774-G |
| Zerex G40 Antifreeze Coolant Zerex · not published · Concentrate | Cummins CES 14603, MAN 324 Typ Si-OAT, VW TL 774-G |
| Castrol Radicool Si-OAT Castrol · Si-OAT · Concentrate | MAN 324 Typ Si-OAT, VW TL 774-G |
| Zerex G05 Antifreeze Coolant Zerex · HOAT · Concentrate | Cummins CES 14603 |
Compatibility notes
- If your owner's manual calls for VW TL 774-G, Shell lists that code for this product. Read the exact wording above, and confirm against your manual.
- Chemistry is listed as Si-OAT. Mixing different chemistries can shorten coolant life. See OAT vs HOAT vs IAT and use the mixing checker before topping up.
- Colour is listed as Pink. Colour is a dye, not a spec, so two coolants of the same colour can be different chemistries. See coolant colours explained.
- Sold premixed: pour as supplied. Do not add water unless the label says to.
Note: Shell technical data sheet (Europe) from Shell LiveDocs. Pre-diluted; Shell does not state the dilution ratio on this sheet.
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: Shell 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
- Xstream G40 Antifreeze & Coolant Ready Mixed (Comma, Premix 50/50)
- Castrol Radicool Si-OAT (Castrol, Concentrate)
- Xstream G40 Antifreeze & Coolant Concentrate (Comma, Concentrate)
- Mobil Antifreeze Ultra (Concentrate) (Mobil, Concentrate)
- PEAK ORIGINAL EQUIPMENT TECHNOLOGY Antifreeze + Coolant 50/50 Prediluted for European Vehicles - VIOLET Check price (PEAK, Premix 50/50)
- PEAK ORIGINAL EQUIPMENT TECHNOLOGY Concentrate Antifreeze + Coolant for European Vehicles - VIOLET Check price (PEAK, Concentrate)
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 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 Shell
See every Shell product we list, with the chemistries and spec codes the maker names, on the Shell coolant brand page.
See all Shell coolants, coolants by brand or coolant by car make.
Browse the full coolant directory, or use Find my car coolant to match the spec in your owner's manual.
Next step
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