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Can a car that uses 95-octane gasoline be filled with 92-octane?

1 Answers
VonElena
07/30/25 2:14am
95-octane cars must not use 92-octane gasoline for a long time, and the reasons are as follows: 1. The biggest difference between 92-octane and 95-octane gasoline is the different octane value in the gasoline, and the higher the octane value, the stronger the anti-knock property of the gasoline. 2. Generally, a car engine has a specified compression ratio, and the corresponding gasoline model can be selected through the compression ratio. A compression ratio of 8-10 uses 92-octane gasoline, and a ratio above 10 uses 95-octane gasoline. 3. If a high-compression engine uses 92-octane gasoline, premature combustion (knocking) at the wrong time will cause engine knocking. This can lead to unstable idling, reduced power, increased fuel consumption, and in severe cases, may even cause engine valve bending or damage to the throttle body cover. Therefore, 95-octane cars must not use 92-octane gasoline for a long time, unless the vehicle runs out of fuel halfway.
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