What are the benefits of using high-octane gasoline?
2 Answers
Using high-octane gasoline can increase power for high-compression ratio engines. Here is an introduction to the advantages and disadvantages of using high-octane gasoline in cars: 1. Disadvantages of using high-octane gasoline in low-compression ratio engines: Since the cylinder pressure does not reach a certain value, the high-octane gasoline is not sufficiently compressed to reach the flammable point, resulting in incomplete combustion. This means the engine's power cannot be fully utilized, leading to wasted fuel and the potential for engine carbon deposits, which may not be worth the trade-off. 2. Advantages of using high-octane gasoline in high-compression ratio engines: In addition to using the appropriate gasoline for the vehicle, high-compression ratio engines can also use relatively higher-grade gasoline. Due to the higher octane rating, the high-compression ratio engine can burn the fuel more completely, which helps provide more power to the car.
I drive a regular family car and usually fill it with 92-octane gasoline, but when I use higher-octane fuels like 95 or 98, the difference is noticeable. The most obvious change is that the engine starts faster, especially during cold starts or in winter—the initial 'hum' is much smoother. On summer highway drives, the engine runs quieter with the AC on, and climbing hills feels easier. I've heard it helps prevent knocking—that feeling when the engine doesn't stutter—and long-term use keeps the engine in better shape. A friend who works at an auto plant mentioned that high-octane fuel has a higher octane rating, making it more resistant to high temperatures and reducing wear risks. However, I've also noticed that if the car is older or not designed for high compression, it might be a waste of money, so checking the manual is key. Overall, the short-term benefits are great, saving some maintenance hassle.
