Can CNOOC and Sinopec gasoline be mixed?

[KinsleyLee]

Gasoline from different gas stations and brands can be mixed as long as they have the same octane rating. If the octane ratings are different, even if the gasoline is from the same brand, it should not be mixed. Mixing different octane ratings can lead to abnormal combustion, causing engine knocking. Engine knocking not only damages the combustion chamber but also directly affects the normal operation of the engine, and in severe cases, it may cause engine damage. To find out which gasoline grade your car requires, you can refer to the car's user manual or check the fuel grade marked on the fuel tank cap. What to do if you fill up with the wrong gasoline: If you fill up with a higher octane gasoline than required by your car, for example, using 95 octane when 92 is specified, you can simply switch back to 92 octane gasoline after the current tank is consumed. If you fill up with a lower octane gasoline than required, for example, using 92 octane when 95 is specified, you can add a high anti-knock fuel additive. Alternatively, you can also drain the fuel and refill with 95 octane gasoline.