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Should the 2020 Hongqi H5 use 92 or 95 octane fuel?

1Answers
McPreston
08/26/2025, 01:36:45 AM

2020 Hongqi H5 models require 92 octane unleaded gasoline as specified by the manufacturer. The gasoline octane rating represents the ratio of the actual gasoline's anti-knock performance to that of standard gasoline. The higher the octane number, the stronger the anti-knock performance. 92 octane gasoline: 92 octane gasoline contains 92% isooctane and 8% n-heptane. Standard gasoline is composed of isooctane and n-heptane. Higher octane numbers are not necessarily better; the appropriate gasoline octane should be selected based on the engine's compression ratio. 95 octane gasoline: 95 octane gasoline contains 95% isooctane and 5% n-heptane. When the engine's cylinders perform piston movements, gasoline and air mix and compress inside the cylinders. If the pressure is too high, knocking can easily occur.

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