Should Buick Use 92 or 95 Octane Gasoline?
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Buick vehicles with 2.4L, 3.0L engines and hybrid models should use 92 octane gasoline; vehicles with 2.0Turbo engines should use 95 octane gasoline. The differences between 92 and 95 octane gasoline are as follows: Different Anti-Knock Properties: The octane rating represents the anti-knock property of gasoline. A higher number indicates better anti-knock performance. Different Isooctane Content: 92 octane gasoline consists of 92% isooctane and 8% n-heptane, while 95 octane gasoline consists of 95% isooctane and 5% n-heptane. The slightly higher price of 95 octane gasoline is due to its higher proportion of isooctane. Different Prices: 95 octane gasoline is slightly more expensive per tank compared to 92 octane gasoline.