Can 98 and 95 be mixed?
1 Answers
95 gasoline and 98 gasoline can occasionally be mixed, but it is not recommended to mix them for a long time. The following is a specific introduction about gasoline: Long-term mixing of gasoline can cause engine knocking. Gasoline is a mixture. The gasoline grade we usually come into contact with refers to the anti-knock index of gasoline (i.e., the octane number). Strictly speaking, 95 gasoline and 98 gasoline cannot be mixed. However, their chemical composition and other aspects are relatively similar, with strong anti-knock performance. To ensure vehicle safety, they should still be used separately. In some areas, there is also low-grade 90 gasoline. If it is mixed with high-grade gasoline, it will cause knocking, insufficient power, and other phenomena, affect the service life of spark plugs, and bring more exhaust pollution. The density of 98 gasoline is generally above 0.74. 98 gasoline is gasoline whose octane number is equal to a mixture of 98% isooctane and 2% n-heptane. The advantage of 98 gasoline is "two highs and two lows", that is, higher anti-knock performance and power performance, and lower harmful substances and exhaust pollution in gasoline. 95 gasoline has strong anti-knock performance and will not be compressed and ignited under high pressure, ensuring that the engine is at the optimal ignition advance angle, and the power output is not affected. The gasoline grade also represents the anti-knock performance of the fuel. The larger the grade, the better the anti-knock performance. Anti-knock performance refers to the ability of gasoline to resist knocking when burning in the engine. It is the primary indicator of gasoline combustion performance. Knocking is caused by abnormal combustion of gasoline in the engine. The octane number is the target of gasoline anti-knock performance. The higher the octane number, the stronger the anti-knock performance, and the higher the compression ratio, the higher the pressure in the combustion chamber. If gasoline with low anti-knock performance is used, knocking is more likely to occur.
