What happens if a car that requires 95-octane gasoline is filled with 92-octane?

1 Answers
LeMadelyn
07/30/25 2:10am
It is generally not recommended to mix gasoline of different octane ratings. If a car designed for 95-octane gasoline is filled with 92-octane, the following issues may occur: 1. The vehicle may experience insufficient power and increased fuel consumption; 2. This can further lead to accelerated wear and damage of engine components, triggering the engine fault warning light; 3. Some vehicles may stall and fail to start. Below are some related details about mixing gasoline: 1. Mixing lower-octane gasoline into a higher-octane vehicle: (1) This may cause engine knocking, leading to overloading and damage to components such as pistons, connecting rods, and cylinder heads; (2) The engine may overheat, causing more combustion byproducts to decompose, increasing exhaust temperature, reducing engine power, and increasing fuel consumption; (3) Elevated engine temperature may result in poor lubrication of moving parts, leading to abnormal wear. 2. Mixing higher-octane gasoline into a lower-octane vehicle: (1) This may cause delayed combustion, ultimately leading to incomplete fuel combustion, increased carbon deposits in the engine, and engine damage.
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