What is the difference between 93 and 92 gasoline?
2 Answers
Here are the differences between 93-octane and 92-octane gasoline: 1. Different anti-knock properties: 92-octane and 93-octane gasoline have different anti-knock properties. Compared to 93-octane, 92-octane has lower anti-knock properties, but other indicators such as sulfur, benzene, aromatics, and manganese content are lower, making it more environmentally friendly. 2. Different phase standards: 93-octane gasoline is a national Phase IV standard gasoline, while 92-octane gasoline is a national Phase V standard gasoline. 3. Different chemical content: The sulfur content limit in 92-octane gasoline is reduced from 50 mg per kilogram to 10 mg per kilogram, and the manganese content limit is reduced from 0.006 grams per liter to 0.002 grams per liter. Below is related information about gasoline: 1. Automotive gasoline grades refer to the types of gasoline used in vehicles, commonly 90, 93, and 97. Starting from January 2012, the gasoline grades "90, 93, 97" were planned to be revised to "89, 92, 95." 2. The so-called 90, 93, and 97-octane unleaded gasoline means they contain 90%, 93%, and 97% of "isooctane," which has strong anti-knock properties, and 10%, 7%, and 3% of "n-heptane," which has poor anti-knock properties, respectively. Thus, the octane rating becomes an indicator of the gasoline engine's ability to resist knocking. An engine designed for 97-octane gasoline will easily produce knocking if 90-octane gasoline is used.
My over ten years of driving experience have taught me that the main difference between 92 and 93 octane gasoline lies in their anti-knock properties, with 93 octane being slightly higher, making it more suitable for high-performance or turbocharged engines with stricter requirements. When it comes to regular family cars, I always use 92 octane because it's affordable and readily available—saving a few cents per liter can add up to hundreds of dollars a year. However, if the vehicle manual specifies 93 octane, I strictly adhere to it, as using the wrong fuel long-term may cause engine knocking, affecting performance and damaging components. I remember when I first bought my car, a friend warned me not to risk switching fuel grades to save money, so when I occasionally travel to areas where only 92 octane is available, I might use it once without issues, but I avoid making it a habit. The difference in fuel consumption is negligible; the key is to choose reliable gasoline based on the vehicle's needs.
