Is There 97 Octane Gasoline?

[KimberlyDella]

There is 97 octane gasoline. Below is an introduction to 97 octane gasoline: 1. Introduction: 97 octane gasoline consists of 97% isooctane and 3% n-heptane. Engines with high compression ratios should use high-octane gasoline. If a high-compression engine uses low-octane gasoline, it may cause abnormal combustion, leading to knocking, increased fuel consumption, and reduced driving performance. 2. Difference Between 93 Octane and 97 Octane Gasoline: The main difference between 93 octane and 97 octane gasoline lies in their anti-knock properties, which are determined by the octane rating. A higher octane rating indicates better anti-knock performance, but it does not mean the gasoline is cleaner. Using higher-octane gasoline does not make it more environmentally friendly. 3. Environmental Impact: In the current domestic gasoline blending process, an additive called methyl tert-butyl ether (MTBE) is commonly used to increase the octane rating of the fuel. However, MTBE can cause groundwater pollution. The aromatic hydrocarbons, olefins, and sulfur present in gasoline, when not fully burned, can produce PM2.5. These chemical substances, emitted through exhaust gases, can combine with the oxygen molecules from MTBE, leading to secondary production of even more PM2.5.