Can I Use 95 After Using 98?

[EmmaDella]

You can use 95 after using 98, but it is important to avoid mixing different grades of gasoline. If you previously used 98-grade gasoline, you should continue using 98-grade gasoline for your next refuel. Mixing gasoline can affect the lifespan of your car's ignition system, fuel injectors, and spark plugs. Gasoline can be categorized based on its source into: straight-run gasoline, catalytic cracked gasoline, thermal cracked gasoline, reformed gasoline, coker gasoline, alkylate gasoline, isomerate gasoline, aromatized gasoline, etherified gasoline, and polymerized gasoline. 98-grade gasoline consists of 98% isooctane and 2% n-heptane, while 95-grade gasoline consists of 95% isooctane and 5% n-heptane. The main difference between the two lies in the purity of isooctane—the higher the purity of isooctane, the stronger the gasoline's anti-knock performance.