What to Do If a Car Designed for 95 Octane Gasoline is Filled with 92 Octane?

[OGabriel]

If a car designed for 95 octane gasoline is filled with 92 octane, you can purchase some additives that increase the octane rating and add them to the fuel tank. This will help raise the octane level of the gasoline and prevent engine knocking. Different grades of gasoline have different octane ratings, with higher-grade gasoline having higher octane values. Generally, turbocharged engines and high-compression naturally aspirated engines require high-octane fuel; otherwise, knocking may occur in the engine. Knocking is an abnormal combustion phenomenon in the engine. When the piston is in the compression stroke and moving upward, the temperature and pressure of the combustible mixture increase. If the gasoline's stability is poor, the combustible mixture may ignite before the spark plug fires, pushing the piston downward while it is still moving upward, resulting in knocking.