Classic Q SAE 40
A monograde mineral oil for classic petrol and diesel engines, with a low-detergent formula for vintage engines without full-flow oil filtration. Why choose this oil
- API SD/CC
Why choose Classic Q SAE 40
Duckhams Classic Q SAE 40 is a high-quality monograde mineral engine oil designed for classic petrol and diesel engines requiring SAE 40 viscosity and API SD/CC performance. It provides dependable wear protection, sludge control and thermal stability. Its low-detergent formula makes it ideal for vintage engines without full-flow oil filtration, helping preserve engine condition and authenticity.
- Monograde mineral oil for classic petrol and diesel engines.
- Dependable wear protection that helps extend engine life.
- Sludge control that helps keep internal parts clean.
- Thermal stability for consistent lubrication.
- Suited to classic vehicles driven in moderate to warm conditions.
Typical physical characteristics
| Property | Unit | Typical Value |
|---|---|---|
| Viscosity | 40 | |
| Density @ 20°C | g/cm³ | 0.877 |
| KV100 | cSt | 13.8 |
| KV40 | cSt | 124.8 |
| VI | 107 | |
| CCS | cP | N/A |
| TBN | mg KOH/g | 5 |
| Sulphated Ash | % | 1.5 |
| Colour | Clear Amber | |
| Flash (Closed) | °C | 233 |
| Pour Point | °C | -33 |
Typical physical characteristics are provided as an indication of properties based on current production data only, and should not be interpreted as a specification.



