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

1 Answers
OJasper
07/28/25 4:40pm
92 octane cars are not recommended to use 95 octane gasoline. The specific reasons are as follows: 1. 95 octane and 92 octane gasoline have different iso-octane and n-heptane values, and mixing them may cause wear and tear to the vehicle. 2. Using 92 octane fuel in a 95 octane car can increase the frequency of engine knocking and accelerate engine wear. 3. 92 octane gasoline contains approximately 92% iso-octane and 8% n-heptane. Iso-octane has better anti-knock properties, while n-heptane has poorer anti-knock properties. Higher octane ratings indicate higher octane values, resulting in better anti-knock performance for the gasoline.
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