What determines the right type of motor oil for a vehicle?

The right type of motor oil for a vehicle is determined by manufacturer specifications and climate conditions. Manufacturer specifications are crucial because they provide guidelines on the viscosity grade and formulation required for optimal engine performance and protection. For example, some engines may require a specific oil that meets particular certification standards, such as those set by the American Petroleum Institute (API) or the International Lubricant Standardization and Approval Committee (ILSAC).

Climate conditions also play a significant role in oil selection. In colder climates, lower viscosity oils might be preferred to ensure easier starting and better flow at low temperatures. Conversely, in hotter climates, higher viscosity oils may be recommended to maintain appropriate lubrication at higher operating temperatures.

Options that focus solely on attributes like color, viscosity rating, vehicle age, or personal preference do not encompass the comprehensive requirements set by manufacturers and the impact of environmental conditions on oil performance.