What is the difference between 92-octane and 95-octane gasoline?
2 Answers
92-octane and 95-octane gasoline differ in the following ways: 1. Different proportions of the same components: The proportions of n-heptane and isooctane in the two types of gasoline are different. 92-octane gasoline contains 92% isooctane and 8% n-heptane, while 95-octane gasoline contains 95% isooctane and 5% n-heptane. 2. Different performance: The different proportions of n-heptane and isooctane in the two types of gasoline directly result in different anti-knock properties. The octane rating of gasoline actually represents its anti-knock performance, with a higher number indicating better anti-knock capability (because it contains more octane).
The biggest difference between 92 and 95 gasoline lies in their octane ratings, which I think is like their ID cards. No. 92 has an octane rating of about 92, while No. 95 is 95. The higher the octane rating, the better the anti-knock performance, preventing engine knocking. If your car is an ordinary family sedan with a low compression ratio, No. 92 is sufficient. But for high-performance or luxury cars with higher compression ratios, No. 95 is necessary to protect the engine. I often encountered friends who used the wrong fuel, leading to abnormal engine noises—a dangerous sign. Knocking can damage pistons and valves, even shortening the engine's lifespan. So, always check the vehicle manual for the recommended fuel grade before refueling. Don't switch fuels just to save money or because it feels better. No. 92 is cheaper, but compatibility is key. Many new car owners overlook this, which can lead to big trouble. Choosing the right fuel can save repair costs and keep your beloved car running smoothly.
