Can You Add 95 Octane Gasoline After Using 98 Octane?
2 Answers
You can add 95 octane gasoline after using 98 octane, but this should only be done in emergencies and not for prolonged mixed use. Here is more information about gasoline: 1. The meaning of gasoline octane ratings: Different octane ratings indicate different levels of octane numbers, with higher octane ratings offering better anti-knock performance. 2. Reasons why different octane gasoline can be temporarily mixed: Although 95 octane and 98 octane gasoline have different additives and chemical compositions, occasional mixing will not cause significant harm to the car. If you mix different octane gasoline in an emergency, there is no need to worry—just refill with the appropriate octane gasoline later. 3. Hazards of prolonged mixed use: Prolonged mixing of different octane gasoline can damage the car's ignition system, fuel injectors, and spark plugs.
I remember struggling with this issue last time I drove my friend's sports car. Actually, occasionally mixing different octane gasoline isn't a big problem, especially when downgrading from 98 to 95 octane. The ECU will automatically adjust the ignition timing based on the knock sensor to prevent engine knocking. However, long-term mixed use isn't good for the engine, especially for high-performance cars with high compression ratios, as it can easily lead to increased carbon deposits and higher fuel consumption. It's fine for emergency use once or twice, but try to refill with higher octane next time. The fuel filler cap usually has the recommended octane rating sticker - following the manufacturer's recommendation is the safest approach.
