Can 92 Octane Gasoline Be Mixed with 95 Octane Gasoline?

[VincentLee]

92 octane gasoline cannot be mixed with 95 octane gasoline. The proportions of n-heptane and isooctane in 92 and 95 octane gasoline are different. 92 octane gasoline contains 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane. For cars that require 92 octane gasoline, using a higher octane rating generally poses no issues. However, if a vehicle manufacturer specifies the use of 95 octane gasoline or higher, using 92 octane gasoline may cause engine knocking, and in severe cases, could lead to bent valves or damage to the valve cover. Therefore, car owners should be cautious when refueling.