Should Polo Use 92 or 95 Octane Gasoline?

[VivienneDella]

Polo can use 92 octane gasoline. Below are the differences between 92 and 95 octane: 1. Different compositions: It can be confirmed that there is no difference in the quality of 92 and 95 octane gasoline; their quality is the same. Analyzing their main components, 92 octane gasoline consists of 92% isooctane and 8% n-heptane, while 95 octane consists of 95% isooctane and 5% n-heptane. The reason 95 octane gasoline is slightly more expensive is due to the higher proportion of isooctane. Isooctane also has another function, which is anti-knock. This means that the higher the proportion of isooctane, the better the anti-knock performance. 2. Different prices: A tank of 95 octane gasoline is slightly more expensive than 92 octane. 3. Different power outputs: 95 octane gasoline, with its higher octane rating, is suitable for engines with higher compression ratios. This is because as the engine speed increases, the ignition timing in the cylinder advances. When the speed reaches a critical point, the air-fuel mixture in the cylinder may ignite prematurely before the spark plug fires, a phenomenon known as knocking. Increasing the octane rating of gasoline can effectively improve anti-knock performance.