Classic OilsClassic Q Range
Classic Q 20W-50
A robust mineral engine oil for older engines and high-load conditions, with strong film strength and thermal stability. Why choose this oil
Viscosity20W-50
Oil TypeMineral
Specifications
- API CC/SF
- MIL-L-2104B
Available in
Why choose Classic Q 20W-50
Duckhams Classic Q 20W-50 is a robust mineral engine oil designed for older engines and high-load operating conditions. It offers strong film strength, thermal stability, and protection, making it ideal for classic vehicles or those operating in hotter climates. The formulation helps reduce oil consumption and maintain engine cleanliness even under demanding use.
- Wear protection
- Engine cleanliness
- High-temperature stability
- Provides reliable protection in high-temperature and heavy-duty conditions.
- Helps minimise engine wear and extend engine life.
- Maintains performance and stability during long drives or towing.
- Reduces oil consumption in older or high-mileage engines.
- Supports engine cleanliness by limiting buildup and deposits.
- Ideal for vintage cars and vehicles operating in warmer environments.
Typical physical characteristics
| Property | Unit | Typical Value |
|---|---|---|
| Viscosity | 20W-50 | |
| Density @ 20°C | kg/m³ | 0.881 |
| KV100 | cSt | 18.5 |
| KV40 | cSt | 162.3 |
| VI | 131 | |
| CCS | cP | 6689 |
| TBN | 6.6 | |
| Sulphated Ash | % | 1.5 |
| Colour | Clear Amber | |
| Flash (Closed) | °C | 223 |
| Pour Point | °C | -9 |
Typical physical characteristics are provided as an indication of properties based on current production data only, and should not be interpreted as a specification.



