Castrol Magnatec 5W-30 is a full synthetic engine oil designed for both gasoline and diesel engines. It features unique Stop-Start technology with clinging molecules that provide continuous protection against engine wear, particularly during frequent stop-start driving conditions. Key features: • Full synthetic formula • 5W-30 viscosity grade • Compatible with gasoline and diesel engines • Stop-Start wear protection technology • Intelligent molecules that cling to engine parts • 4L container volume The oil's 5W-30 grade offers excellent cold start protection while maintaining optimal viscosity at operating temperatures. The Magnatec technology creates a protective layer that clings to critical engine parts even when the engine is off, providing instant protection from the moment you start your vehicle. This makes it particularly suitable for urban driving conditions with frequent stops and starts.