What are the effects of mixing 92 and 95 gasoline?
1 Answers
92 and 95 gasoline cannot be mixed because they have different isooctane contents. 92 gasoline is suitable for engines with low compression ratios, while 95 gasoline is suitable for engines with high compression ratios. If 92 gasoline is added to a car that originally requires 95 gasoline, abnormal combustion may occur, leading to knocking. Knocking not only damages the combustion chamber but also directly affects the normal operation of the engine, and in severe cases, it may cause engine damage. If 95 gasoline is added to a car that originally requires 92 gasoline, although it will not damage the engine, 95 gasoline is more expensive than 92 gasoline, resulting in waste. The differences between 92, 95, and 98 gasoline: Standard gasoline is composed of isooctane and n-heptane. Isooctane has good anti-knock properties, and its octane number is defined as 100; n-heptane has poor anti-knock properties and is prone to knocking in gasoline engines, so its octane number is defined as 0. If the gasoline is labeled as 92, it means that the gasoline has the same anti-knock properties as standard gasoline containing 92% isooctane and 8% n-heptane. The same principle applies to 95 and 98 gasoline. How to handle adding the wrong gasoline: If the gasoline added has a higher octane number than the car's specified gasoline, for example, adding 95 when 92 is required, simply switch back to 92 gasoline after the current fuel is consumed. If the gasoline added has a lower octane number than the car's specified gasoline, for example, adding 92 when 95 is required, you only need to add a high anti-knock fuel additive. Of course, you can also drain the fuel and refill with 95 gasoline. To find out which gasoline your car requires, you can refer to the car's user manual or check the fuel grade marked on the fuel tank cap.
