Castrol Magnatec Stop-Start 5W-30 A3/B4 4L Engine Oil

Engine oil engineered for modern stop-start vehicles, Castrol Magnatec Stop-Start 5W-30 A3/B4 delivers immediate protection from the moment you turn the key. Its intelligent molecules cling to critical engine parts, forming a durable shield that drastically reduces wear during the frequent restarts and high-stress conditions of urban driving.

Advantages

Magnatec's unique formulation provides up to 20% better wear protection in stop-start traffic compared to conventional oils. The synthetic technology base ensures excellent thermal stability, keeping the oil robust under high temperatures while maintaining fluidity in cold starts. This 5W-30 grade meets stringent ACEA A3/B4 and API SL/CF standards, offering versatile protection for both petrol and diesel engines. With manufacturer approvals from BMW, Mercedes-Benz, Volkswagen, and Renault, it is a trusted choice for a wide range of vehicles.

Suitable for

• Petrol and diesel engines requiring ACEA A3/B4 or API SL/CF oils
• Vehicles with manufacturer specifications: BMW Longlife-01, MB 229.3, VW 502 00/505 00, Renault RN0700/RN0710
• Stop-start equipped cars and urban commuter vehicles
• High-performance and turbocharged engines

Key specifications

• Viscosity grade: SAE 5W-30
• Volume: 4 litres
• Oil type: Synthetic technology
• ACEA standards: A3/B4
• API standards: SL/CF
• Kinematic viscosity @ 100°C: 11.0 mm²/s
• Kinematic viscosity @ 40°C: 66 mm²/s
• Viscosity index: 160
• Pour point: -39°C
• Flash point: 200°C
• Density @ 15°C: 0.85 g/ml
• Sulphated ash: 1.2% wt

Recommendations

For optimal performance, always consult your vehicle owner's manual to confirm the correct viscosity and specification. Replace engine oil and filter at intervals recommended by the manufacturer, especially under severe driving conditions. Store in a cool, dry place away from direct sunlight and keep out of reach of children.