Can 98 and 95 Gasoline Be Mixed?

[DelJeffrey]

95 octane gasoline and 98 octane gasoline should not be mixed in strict terms. However, their chemical compositions and other aspects are relatively similar, and both have strong anti-knock properties. Generally, mixing them won't cause significant issues, but to ensure vehicle safety, it's best to use them separately. The differences between 98 octane and 95 octane gasoline: 1. Different chemical composition ratios: 98 octane gasoline consists of 98% isooctane and 2% n-heptane, while 95 octane gasoline consists of 95% isooctane and 5% n-heptane. 2. Different anti-knock properties: Anti-knock refers to the ability of gasoline to resist detonation under various usage conditions. The difference between 98 and 95 mainly lies in the purity of isooctane—the higher the purity of isooctane, the stronger the anti-knock property of the gasoline. 3. Different prices: In terms of price, since 98 octane gasoline has higher anti-knock properties than 95 octane gasoline, it is also more expensive than 95 octane gasoline.