What is the current equivalent of 93-octane gasoline?
2 Answers
93-octane gasoline is now equivalent to 92-octane, which meets the China V standard, comparable to the previous 93-octane under the China IV standard. Standard gasoline is composed of isooctane and n-heptane. The gasoline octane number indicates the octane rating value. For example, 92-octane gasoline means it has the same anti-knock properties as a standard fuel containing 92% isooctane and 8% n-heptane. It is essential to match the gasoline type with the vehicle's engine, primarily determined by the engine's compression ratio. Higher compression ratios require gasoline with higher octane numbers. When refueling, do not use a lower-octane gasoline in a high-compression engine, as this can cause abnormal combustion, wasting fuel and damaging engine performance. Similarly, avoid using higher-octane gasoline in a low-compression engine, as it wastes gasoline resources.
As an automotive enthusiast, I understand that 93-octane gasoline refers to the old octane rating, indicating stronger anti-knock performance. After China upgraded its national gasoline standard to China VI, 93-octane has been replaced by 92-octane gasoline. Nowadays, gas stations offer 89, 92, 95, or 98-octane fuel. 92-octane gasoline has an octane rating of approximately 92, replacing the outdated 93-octane and is suitable for most common household engines. Higher octane is wasteful without benefits, while lower octane may cause knocking and engine damage, making 92-octane the most economical and safe choice currently. I recommend car owners check their vehicle manuals or fuel cap labels to confirm the recommended grade. These changes stem from environmental improvements, with cleaner fuels reducing exhaust pollution. Using the correct fuel is crucial for extending engine life and saving money. In short, since 93-octane is no longer available, simply switch to 92-octane for an easy transition.
