Is it necessary to use 95 octane gasoline for Haval H6?
2 Answers
Haval H6 does not require 95 octane gasoline; it uses 92 octane gasoline. The difference between 92 and 95 octane gasoline: 92 octane gasoline contains 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane. The gasoline octane rating represents the fuel's anti-knock performance. The higher the octane number, the better the anti-knock performance. However, the octane rating is not related to the quality of the gasoline itself. A higher octane number does not mean the gasoline is better, nor does it indicate fewer impurities or higher purity. Anti-knock performance refers to the gasoline's ability to resist knocking when burning in the engine. It is the primary indicator of gasoline combustion performance. Knocking occurs when gasoline burns abnormally in the engine. The octane number is designed to measure the gasoline's anti-knock performance. The higher the octane number, the stronger the anti-knock performance. A higher compression ratio leads to higher pressure in the combustion chamber. If gasoline with low anti-knock performance is used, knocking is more likely to occur. Since 95 octane gasoline has a higher octane content than 92 octane gasoline, its anti-knock performance is better. The choice of gasoline octane rating depends on the engine's compression ratio. Blindly using higher-octane fuel is not advisable. If the engine's compression ratio is insufficient, the advantages of high anti-knock performance cannot be utilized. Using gasoline that does not match the compression ratio may cause the fuel mixture to detonate prematurely during piston compression, affecting the car's performance.
I've been driving a Haval H6 for several years and have always used 92-octane gasoline without any issues. 95-octane is significantly more expensive than 92, with a price difference of a few cents per liter at gas stations. Filling up a tank with 95 would cost over ten yuan more, and saving hundreds of yuan a year could cover tire maintenance. The H6's engine was designed to run on 92-octane fuel, and its compression ratio isn't high enough to justify using 95—it's simply unnecessary. Some friends mistakenly believe that higher-octane fuel is better and makes the engine run smoother, but during daily commuting, you won't notice any difference unless you've modified the engine or frequently drive aggressively. The key is to stick to reputable gas stations to ensure fuel quality and avoid substandard 92-octane gasoline. I remember the new car manual clearly recommending 92-octane, so follow that and don’t waste money. Long-term use of 95 might slightly confuse the sensors, leading to minor ignition system misjudgments, but the impact is negligible—saving money is far more practical.
