Can I Add 95 Octane Gasoline When 92 Octane Is Not Completely Used Up?
2 Answers
It is not recommended to add 95 octane gasoline when 92 octane is not completely used up. Gasoline is a mixture, and the octane rating we usually refer to indicates the anti-knock index or the difference in octane numbers. Therefore, 92 octane and 95 octane gasoline should not be mixed. The higher the gasoline octane rating, the stronger its ability to resist engine knocking. The difference between 92 and 95 is that 95 is more resistant to knocking than 92. Gasoline is a colorless to light-yellow, easily flowing liquid at room temperature, which is difficult to dissolve in water and is flammable. Its distillation range is between 30°C and 205°C, and it can be used as fuel. The important characteristics of gasoline include volatility, stability, anti-knock properties, corrosiveness, and cleanliness.
I've been driving for over ten years, and there's no major issue with adding 95-octane gasoline before the 92-octane fuel runs out. The car's engine can adapt to different gasoline octane mixtures. I remember being a bit worried when I first mixed them, but after a few times, the car ran normally without any engine problems. However, experts often advise against frequently mixing different fuel grades, as varying octane levels may affect ignition timing. In the long run, it's best to use the fuel grade recommended in the vehicle manual to avoid potential minor performance fluctuations. 92-octane fuel is cheaper, while 95-octane is more expensive. If it's just for convenience when in a hurry, mixing is a feasible solution. But next time you refuel, it's recommended to prioritize using up the old fuel before adding the new grade, as maintaining consistency benefits maintenance and keeps the car running smoothly.
