Is 92 Octane Gasoline Lead-Free?

1 Answers
DiLayla
07/30/25 12:39am
Currently, all gasoline sold in the market is lead-free, with octane ratings such as 92, 95, and 98. Understanding Gasoline Octane Ratings: The primary difference between gasoline with different octane ratings lies in their anti-knock performance, which is a crucial indicator for evaluating fuel quality. 92 octane gasoline has an octane rating of 92 and is suitable for mid-range vehicles (with relatively low compression ratios). 95 octane gasoline consists of 95% isooctane and 5% n-heptane, and high-octane gasoline should be used when the engine has a high compression ratio. 98 octane gasoline has an octane rating equivalent to a mixture of 98% isooctane and 2% n-heptane. The advantages of 98 octane gasoline are 'two highs and two lows': higher anti-knock performance and power output, along with lower harmful substances in the gasoline and reduced exhaust pollution. Precautions for Refueling: Do not arbitrarily switch to a different octane rating. Switching to a lower octane rating may cause premature combustion of the gasoline, leading to engine knocking. Additionally, incomplete combustion of the gasoline can result in increased carbon deposits, which may clog the fuel lines and injectors, leading to reduced vehicle power and increased fuel consumption.
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