What is the difference between e92 gasoline and 92 gasoline?
2 Answers
The difference between e92 gasoline and 92 gasoline lies only in their alcohol content: e92 gasoline is fuel blended with 10% alcohol, known as ethanol gasoline; whereas 92-octane gasoline is regular unleaded gasoline without any alcohol component. Definition of gasoline octane ratings: 92-octane gasoline contains 92% isooctane, with the remainder being n-heptane. Similarly, 95-octane gasoline consists of 95% isooctane. There is no superiority or inferiority between these two types of gasoline; they are simply designed for engines with different compression ratios. Anti-knock properties of gasoline octane ratings: Isooctane correlates with anti-knock performance, while n-heptane affects combustion speed. 92-octane gasoline has relatively weaker anti-knock properties, whereas 95-octane gasoline offers higher anti-knock performance and consequently slower combustion speed. Selection between 95-octane and 92-octane gasoline: 95-octane gasoline is suitable for high-end vehicles, while 92-octane gasoline is appropriate for mid-range vehicles.
I recently switched to a different type of gasoline and compared the differences between E92 and 92. The 92-octane is pure gasoline with good anti-knock performance, providing strong power and stable fuel consumption. E92 contains about 10% ethanol, similar to alcohol-blended gasoline, making it more environmentally friendly by reducing exhaust pollution. However, ethanol has lower energy density, so a full tank may burn slightly more fuel, resulting in slightly reduced mileage. From my experience, E92 offers quicker response at startup, especially in winter when engine lubrication is better, but long-term storage in summer may lead to moisture absorption and sedimentation, potentially affecting the engine. The vehicle manual is crucial—most new cars are compatible with E92, while older cars are safer using pure 92-octane to avoid ethanol corrosion in rubber fuel lines. Price-wise, E92 is sometimes cheaper due to government subsidies, but long-term savings may not be significant. It’s best to choose based on driving habits and regional policies—for example, using E92 more in the city and 92-octane for long-distance trips for peace of mind.
