In which type of engine would you typically use the S classification?

The S classification refers to a category of engine oil specifically formulated for gasoline engines. This classification indicates that the oil meets certain performance standards established by the American Petroleum Institute (API) for engines that run on gasoline fuel. Oils that fall under this classification are designed to provide adequate protection, maintain engine cleanliness, and promote performance in gasoline-powered engines.

Using S classification oil in gasoline engines ensures that the oil can handle the demands of such engines, including temperature fluctuations, wear, and the need for effective lubrication. While other types of engines like diesel engines or electric engines have their specific oil classifications, the S classification is specifically tailored and recommended for gasoline engines to ensure optimal performance and longevity.