Is the Previous 93 Octane Gasoline the Same as the Current 92 Octane Gasoline?
1 Answers
The previous 93 octane gasoline is now the 92 octane gasoline. The 92 octane is the National Standard V, which is equivalent to the previous 93 octane under National Standard IV. Definition of gasoline octane rating: The octane rating is the ratio of the actual gasoline's anti-knock performance to that of standard gasoline. The higher the octane number, the stronger the anti-knock performance. Standard gasoline is composed of isooctane and n-heptane. A higher octane number is not necessarily better; the appropriate gasoline octane should be selected based on the engine's compression ratio. Differences between 92 octane and 93 octane gasoline: Different octane values: 93 octane gasoline has an octane value of 93, while 92 octane gasoline has an octane value of 92. The octane value of 93 octane gasoline is higher than that of 92 octane gasoline. Different anti-knock capabilities: The anti-knock capability is determined by isooctane; the higher the content, the stronger the anti-knock capability. 93 octane gasoline contains 93% isooctane, while 92 octane gasoline contains 92% isooctane. Therefore, the anti-knock capability of 93 octane gasoline is stronger than that of 92 octane gasoline. Different pollution levels: Compared to 93 octane, 92 octane has reduced anti-knock performance, but other indicators in the gasoline, such as sulfur, benzene, aromatics, and manganese, are lower, making it more environmentally friendly. Different practical uses: 93 octane gasoline was specified under National Standard IV, while National Standard V changed it to 92 octane gasoline. There is little difference in practical use between the two, and both are suitable for mid-range cars.
