Summary
Mobil Antifreeze Ultra (Concentrate) coolant data, from Mobil's own source. Mobil Antifreeze Ultra (Concentrate) is a concentrate Si-OAT ethylene glycol-based coolant listed by ExxonMobil. The manufacturer lists 3 OEM or industry spec codes, including JIS K2234.
Specifications
| Brand | Mobil |
|---|---|
| Maker | ExxonMobil |
| Product | Mobil Antifreeze Ultra (Concentrate) |
| Part numbers (as published) | not published |
| Sizes (as published) | not published |
| Chemistry | Si-OAT |
| Base glycol | Ethylene glycol |
| Colour | Violet |
| Premix or concentrate | Concentrate |
| OEM / industry specs listed | JIS K2234, SAE J1034, BS 6580 |
| ASTM standards listed | ASTM D3306, ASTM D4985 |
| Service life claim | not published |
| Freeze point (as published) | not published |
| Free-of claims | nitrite-free, borate-free, phosphate-free, amine-free |
| Datasheet | not published |
| Source | manufacturer page |
| Last checked | 22 October 2026 |
Specs and approvals listed by the manufacturer
- Meets JIS K2234 per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (Japan (JIS))
- Meets SAE J1034 per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (SAE)
- Meets BS 6580 per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (British Standard)
- Meets ASTM D3306 per Mobil (industry test standard)
- Meets ASTM D4985 per Mobil (industry test standard)
Manufacturer wording: Mobil PDS: "contains Glysantin G40 by BASF and fulfills the requirements of the following coolant standards: AS 2108-2004, ASTM D 3306, ASTM D 4985, SAE J1034, ÖNORM V 5123, CUNA NC 956-16, JIS K 2234:2006, SANS 1251:2005, China GB 29743-2013 and BS 6580:2010". Mobil's European pages also list OEM approvals held by Glysantin G40 (VW TL 774-G, MB 325.5/325.6, MAN 324 Typ Si-OAT
"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 JIS K2234, Mobil 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 Violet. Colour is a dye, not a spec, so two coolants of the same colour can be different chemistries. See coolant colours explained.
- 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: Mobil product data sheet (Asia-Pacific). Mixing with other coolants is "not recommended" per Mobil. Recommended concentration 33% to 60% by volume.
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: Mobil product page.
Compare this coolant side by side
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- Xstream G40 Antifreeze & Coolant Concentrate (Comma, Concentrate)
See all Mobil coolants, coolants by brand or coolant by car make.
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Sources
- Mobil product page (status on 22 Oct 2026: 403 to automated check; text read via search index 2026-10-22)