Is There Any Impact of Mixing 92 and 95 Octane Gasoline?
1 Answers
92 octane gasoline and 95 octane gasoline should not be mixed because they have different isooctane contents. 92 octane gasoline is suitable for engines with low compression ratios, while 95 octane gasoline is suitable for engines with high compression ratios. If 92 octane gasoline is added to a car that requires 95 octane gasoline, abnormal combustion may occur, leading to engine knocking. Knocking not only damages the combustion chamber but also directly affects the normal operation of the engine, and in severe cases, may cause engine damage. If 95 octane gasoline is added to a car that requires 92 octane gasoline, although it won't damage the engine, 95 octane gasoline is more expensive than 92 octane, resulting in unnecessary costs. Differences between 92, 95, and 98 octane gasoline: Standard gasoline is composed of isooctane and n-heptane. Isooctane has good anti-knock properties, with its octane rating set at 100, while n-heptane has poor anti-knock properties and is prone to knocking in gasoline engines, with its octane rating set at 0. If the gasoline is labeled as 92 octane, it means the gasoline has the same anti-knock properties as a standard gasoline composed of 92% isooctane and 8% n-heptane. The same principle applies to 95 and 98 octane gasoline. What to do if the wrong gasoline is added: If a higher octane gasoline than required is added, for example, adding 95 octane when the car requires 92 octane, simply use up the gasoline and then refill with 92 octane gasoline. If a lower octane gasoline than required is added, for example, adding 92 octane when the car requires 95 octane, you can add a high anti-knock fuel additive. Alternatively, you can drain the gasoline and refill with 95 octane gasoline. To determine the correct gasoline for your car, refer to the vehicle's user manual or check the fuel grade labeled on the fuel tank cap.
