What is the difference between 92 and 95?
2 Answers
92#: Gasoline with an octane rating of 92% and a heptane rating of 8%. 95#: Gasoline with an octane rating of 95% and a heptane rating of 5%. Below are specific details about gasoline octane ratings: 1. Differences in gasoline octane ratings: The higher the octane rating of gasoline, the better its anti-knock performance. Anti-knock performance refers to the ability of gasoline to resist knocking when burned in the engine. 2. Anti-knock performance of gasoline: Higher anti-knock performance is not always better for gasoline. If the manufacturer recommends using 95# gasoline but 92# gasoline is used instead, it can cause engine knocking and reduced engine efficiency. Conversely, if the manufacturer recommends using 92# gasoline but 95# gasoline is used, it can lead to delayed ignition (i.e., the piston compresses the gasoline to the limit without reaching its auto-ignition point). Therefore, different grades of gasoline generally should not be mixed.
I usually drive to work and have noticed a significant difference between 92 and 95 octane gasoline. 92 octane is much cheaper, saving me dozens of yuan per tank, making it ideal for budget-conscious commuters like me. 95 octane has a higher octane rating and better anti-knock properties, ensuring smoother engine performance at high speeds without any buzzing noises, and it also offers slightly better fuel efficiency. My old car's manual recommends 92 octane, but using 95 is also fine. However, for turbocharged models or German cars, 95 octane is a must to avoid engine damage. Using the wrong fuel long-term may increase carbon buildup, so I suggest checking the vehicle manual before each refueling—don't force lower-octane fuel just to save money. Additionally, 92 octane is more common in remote gas stations, while 95 octane is widely available in urban areas with stable pricing. Choosing wisely can extend engine life.
