Can gasoline of the same octane rating be mixed?
2 Answers
Gasoline of the same octane rating cannot be mixed. Here is an introduction to gasoline-related content: 1. Gasoline is produced by refining petroleum to obtain straight-run gasoline components, catalytic cracking gasoline components, catalytic reforming gasoline components, and other different gasoline components, which are then refined and blended with high-octane components. 2. Gasoline is mainly used as fuel for spark-ignition internal combustion engines in automobiles. Below is extended information on the differences between 95# and 92# gasoline: 1. Composition ratio: 95-octane gasoline contains 95% isooctane and 5% n-heptane; 92-octane gasoline contains 92% isooctane and 8% n-heptane. 2. Anti-knock performance: 95-octane gasoline has higher anti-knock performance; 92-octane gasoline has lower anti-knock performance.
Of course, you can mix the same grade of gasoline. Personally, I think it's quite normal. For example, 92-octane gasoline from different gas stations has similar octane ratings, meaning the anti-knock performance is consistent. Engine designs already account for these variations, so there's usually no big issue. However, different brands might have slight differences in additives. For my regular family car, mixing doesn’t cause any noticeable problems—acceleration stays smooth, no shaking or stalling. Saving money is a plus, and you can take advantage of discounts freely. Just avoid mixing too much low-tier fuel to prevent long-term performance issues, but occasionally doing so is completely fine. Remember, maintaining consistent fuel quality is ideal, but flexibility is key when life gets busy.
