Product Overview
Motul Auto Cool Optimal Ultra Concentrated Antifreeze Coolant
Motul Auto Cool Optimal Ultra is a high-performance concentrated long-life antifreeze and coolant developed to provide dependable protection for modern automotive cooling systems. Using Organic Acid Technology (OAT), it combines effective freeze protection with corrosion resistance, efficient heat transfer and protection against cooling-system deterioration.
Designed for use across a wide range of passenger cars, commercial vehicles and other liquid-cooled engines, Motul Auto Cool Optimal Ultra is an excellent choice when a high-quality concentrated OAT coolant meeting a broad range of manufacturer requirements is needed.
Protection Down to -54°C
The concentrated formulation allows the coolant mixture to be adjusted to suit operating conditions. When mixed at a 60% Motul Auto Cool Optimal Ultra to 40% suitable soft water ratio, the coolant provides freeze protection down to approximately -54°C.
For normal applications, the concentration can be adjusted according to the level of freeze protection required. Motul recommends maintaining a minimum concentration of 33% to retain adequate anti-corrosion performance.
Organic Acid Technology
Motul Auto Cool Optimal Ultra uses Organic Acid Technology to provide long-lasting corrosion protection while supporting efficient thermal exchange within the cooling system. This helps the cooling system control engine operating temperature while protecting important components such as the radiator, water pump, hoses, seals and cooling passages.
Key Benefits
- Premium concentrated OAT antifreeze and coolant
- Freeze protection down to -54°C at 60% concentration
- Helps protect cooling-system metals against corrosion
- Excellent thermal-transfer characteristics
- Helps protect the water pump against cavitation
- Compatible with cooling-system seals, rubber hoses and plastic components
- Long-life Organic Acid Technology formulation
- Nitrite free
- Amine free
- Phosphate free
- Borate free
- Silicate free
Available Sizes
MOT111052 – 1 Litre
Ideal for topping up, smaller cooling systems or keeping as a spare.
MOT112630 – 5 Litres
Ideal for complete coolant changes and larger cooling-system capacities.
Mixing Guide
| Coolant Concentration | Approx. Freeze Protection |
|---|---|
| 33% | -22°C |
| 40% | -30°C |
| 50% | -41°C |
| 60% | -54°C |
Do not use the concentrated product neat. Mix with suitable soft water according to the required level of freeze protection and always follow the vehicle manufacturer’s coolant specifications and replacement intervals.
Wide Manufacturer Compatibility
Motul Auto Cool Optimal Ultra is formulated to meet or correspond with numerous automotive coolant requirements, including applications associated with Audi, Volkswagen, SEAT, Škoda, Ford, Jaguar, Land Rover, Mercedes-Benz, Renault, Nissan, Vauxhall, Opel, Volvo, Fiat, Mazda, Mitsubishi and other manufacturers.
Always check the required coolant specification for your exact vehicle before purchase. Coolant colour alone should never be used to determine compatibility.
Key standards / OEM performance references
Motul lists standards including ASTM D3306, ASTM D4656 and BS 6580, plus OEM performance references such as:
VW/Audi/SEAT: TL 774 D (G12), TL 774 F (G12+)
Mercedes-Benz: MB 325.3
Ford: WSS-M97B44-D
GM/Vauxhall/Opel: GM 6277M
Renault/Nissan: Renault 41-01-001 Type D
MAN: MAN 324 Typ SNF
Volvo: 128 6083/002
Fiat: 9.55523
Mazda: MEZ MN 121 D
Land Rover/Jaguar: CMR 8229 / WSS-M97B44-D
Useful technical details
| Specification | Detail |
|---|---|
| Product | Motul Auto Cool Optimal Ultra |
| Product type | Concentrated antifreeze / coolant |
| Technology | Organic Tech / OAT |
| Base | Monoethylene glycol |
| Colour | Orange fluorescent |
| Maximum listed freeze protection | -54°C at 60% concentration |
| Boiling point of concentrate | 180°C |
| Density at 20°C | 1.112 |
| Nitrite | Free |
| Amine | Free |
| Phosphate | Free |
| Borate | Free |
| Silicate | Free |
| 1L SKU | MOT111052 |
| 5L SKU | MOT112630 |
