Is there 97 octane gasoline?

[DeEvelyn]

There is 97 octane gasoline. Here are the specific details about 97 octane gasoline: 1. Introduction: 97 octane gasoline is a type of gasoline with an octane rating of 97, which means it has the same anti-knock properties as standard gasoline containing 97% isooctane and 3% n-heptane. Engines with high compression ratios should use high-octane gasoline. If a high-compression engine uses low-octane gasoline, it can lead to abnormal combustion, causing knocking, increased fuel consumption, and loss of power. 2. Standards: The country has strict standards for automotive gasoline. These standards not only require gasoline to have a certain octane rating (commonly known as the gasoline grade) but also impose strict regulations on the content of various chemical components in gasoline. If the olefin content is too high, the gasoline may not burn completely, producing a gummy substance that accumulates in the intake manifold and valve guides. When the engine is at normal operating temperature, there are no abnormalities, but after the engine is turned off and cools down for a while, these deposits can stick the valves in the valve guides. Starting the engine in this condition can cause valve sticking issues.