Can Different Grades of Gasoline Be Mixed?

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Different grades of gasoline can be mixed, but it is not recommended to mix them for a long time. The effects of long-term mixing of different grades of gasoline are: 1. Shortening the service life of the car's ignition system, fuel injectors, and spark plugs; 2. Advancing the overhaul time of the vehicle; 3. Unstable power output of the car; 4. Increasing tailpipe pollution and harming the environment. Gasoline is a volatile and flammable hydrocarbon mixture liquid obtained from the fractional distillation, cracking, or pyrolysis of petroleum, used as fuel. It appears as a transparent liquid, mainly composed of aliphatic hydrocarbons, naphthenic hydrocarbons, and a certain amount of aromatic hydrocarbons. Gasoline has a high octane number and is classified into grades 89, 90, 92, 93, 95, 97, and 98 based on the octane rating.