What model of engine oil required?

The required engine oil model typically depends on the vehicle's make, model, and year, as well as the manufacturer's specifications. You can usually find this information in the owner's manual or on the oil filler cap. Common oil specifications include viscosity ratings like 5W-30 or 10W-40, and certifications such as API or ILSAC standards. Always ensure to use oil that meets the required specifications for optimal engine performance and longevity.