What to Do If 92 Octane Gasoline Is Accidentally Filled with 98 Octane?
2 Answers
Filling a car that normally uses 92 octane gasoline with 98 octane is generally not a problem, but long-term mixing of different octane levels should be avoided. If a vehicle is designed for 95 or 98 octane gasoline and is filled with 92 octane, it may cause issues, especially if 92 octane is used continuously over time. This can lead to increased knocking frequency and accelerated engine wear. Different octane levels have varying utilization rates and combustion efficiencies in the engine. The octane rating represents the ratio of the actual gasoline's anti-knock properties to those of standard gasoline, with higher numbers indicating stronger anti-knock performance. Standard gasoline is composed of isooctane and n-heptane, and higher octane numbers are not necessarily better. It's important to choose the appropriate gasoline octane based on the engine's compression ratio.
As a seasoned driver with years of experience, I've encountered the issue of misfueling several times. My car is supposed to use 92 octane, but I accidentally filled it with 98 octane? No worries, 98 octane gasoline has a higher octane rating and better knock resistance, which won't harm the engine. In fact, it might even result in cleaner combustion. My advice is to use up this tank of fuel completely rather than rushing to drain it, as that would be more troublesome. While driving, pay attention to the engine sound and check for any unusual noises or vibrations. You might notice a slight improvement in fuel efficiency. After using it up, switch back to 92 octane to save some money. Remember, using higher octane fuel long-term is a waste of money, but this little mistake isn't something to stress over. You can also check the user manual to confirm the recommended fuel grade—most cars are designed to be compatible with higher octane fuels unless they're older models.
