Is it okay to occasionally switch to 95 gasoline when regularly using 92?
2 Answers
It is acceptable to occasionally switch to 95 gasoline when regularly using 92, as the vehicle's power will not show significant changes. However, frequent switching is not recommended. Additional information: The differences between 95 and 92 gasoline are as follows: 1. Different proportions of n-heptane and isooctane: 95 gasoline contains 95% isooctane and 5% n-heptane; 92 gasoline contains 92% isooctane and 8% n-heptane. 2. Different anti-knock properties: The anti-knock index of 95 gasoline is 90; the anti-knock index of 92 gasoline cannot be less than 87.
As someone who drives a small car to and from work every day, I've found that occasionally switching from 92-octane to 95-octane gasoline is completely fine. My car is an ordinary family sedan with a fairly standard engine design that can adapt to different octane levels, so temporarily changing fuel grades once or twice won't cause any issues. For example, when I go on long trips or travel to other areas where only 95-octane is available at gas stations, I'll use it. The car feels slightly more powerful, though it's more expensive. The key is to check the vehicle manual - modern car ECUs automatically adjust ignition timing to prevent knocking risks. If you mix fuels long-term, it might lead to slightly more carbon buildup, but occasional use really isn't something to worry about. I've never experienced issues like flickering lights or engine abnormalities, so feel free to switch occasionally - just don't make it a habit to avoid unnecessary extra costs.