Can I Add 92 Octane Gasoline After Adding 95 Octane?

[MackenzieRose]

It is possible to add 92 octane gasoline after using 95 octane. The higher the octane rating, the greater the isooctane content and the stronger the anti-knock performance. Whether it's 92 or 95 octane gasoline, the only difference lies in the isooctane content—there is no distinction in gasoline quality or the calorific value per unit volume of fuel. Standard gasoline consists of isooctane and n-heptane. The primary criterion for selecting gasoline octane rating is the engine's compression ratio, which is also a core energy-saving indicator in modern vehicles. Gasoline is a volatile, flammable hydrocarbon mixture liquid derived from the fractional distillation, cracking, or pyrolysis of petroleum. It primarily serves as fuel for spark-ignited internal combustion engines and mainly includes organic compounds obtained from crude oil distillation and various additives.