4100 Ecomile 5W30 is a synthetic blend engine oil, designed for use in both petrol and diesel cars. It's a Technosynthese oil, meaning it's a blend of synthetic and mineral oil. The 5W30 viscosity grade indicates that it provides good cold weather performance with a 5 viscosity at low temperatures and a 30 viscosity at higher temperatures. It is suitable for a variety of vehicles, including those with BS VI engines. Here's a more detailed breakdown Viscosity 5W30. This means it's less viscous at low temperatures (winter) than a 10W30, and less viscous at high temperatures than a 5W50. Type Synthetic blend. This means it's a mixture of synthetic and conventional (mineral) oil. Application Petrol, diesel, and CNG cars. Features Engine response, LSPI protection, suitable for BS VI engines. Benefits Provides excellent lubrication, reduced friction, and improved engine efficiency, resulting in better fuel economy.