Can a Car Designed for 95 Octane Gasoline Use 92 Octane?

[AdalineLee]

1. Using gasoline with an octane rating lower than the engine's requirement can cause knocking and damage the engine. 2. Generally, the higher the engine's compression ratio, the higher the required gasoline octane rating. A higher compression ratio increases cylinder pressure and temperature, making the air-fuel mixture more prone to premature combustion, which can lead to engine knocking. 3. Occasionally using 92 octane gasoline can negatively affect the engine's thermal efficiency, power output, fuel economy, and exhaust emissions.