Gasoline with an octane rating of 89 is classified as?

Gasoline with an octane rating of 89 is classified as mid-grade gasoline. The octane rating of fuel indicates its ability to resist knocking during combustion, which is a critical factor in internal combustion engine performance.

Regular gasoline typically has an octane rating of around 87, while premium gasoline usually has an octane rating of 91 or higher. Mid-grade gasoline fills the gap between regular and premium, providing a rating of 89. This classification is important for consumers choosing the appropriate fuel for their vehicles, especially if they have engines designed for higher octane fuel to ensure optimal performance and efficiency.

In summary, gasoline with an octane rating of 89 is recognized as mid-grade gasoline because it meets the standard specifications that fall between regular and premium options.