Should the new Sylphy use 92 or 95 octane gasoline?
2 Answers
The new Sylphy uses 92 octane gasoline. In terms of power, this car is equipped with a 1.6L naturally aspirated engine. Compared to turbocharged engines, naturally aspirated engines have relatively lower power output, making 92 octane fuel sufficient. Relevant information about gasoline octane ratings is as follows: 1. The gasoline octane rating is the ratio of the actual gasoline's anti-knock performance to that of standard gasoline. The higher the octane rating, the stronger the anti-knock performance. 2. Standard gasoline is composed of isooctane and n-heptane. Higher octane ratings are not necessarily better; the appropriate gasoline octane rating should be selected based on the engine's compression ratio. 3. To evaluate the anti-knock performance of fuel, two methods are generally used: the Motor method and the Research method. The evaluation is usually conducted on a specially designed single-cylinder engine with variable compression ratio.
I've been driving a Sylphy for six years and have always used 92-octane gasoline without any issues. The engine compression ratio of this car is designed for 92-octane fuel, and the manufacturer's manual clearly states that 92 is acceptable. Many people think using 95-octane is better for the car, but it's actually a waste of money because higher-octane gasoline only has better anti-knock properties, which the Sylphy's engine doesn't need. Of course, if you're driving in high-altitude areas or taking long trips in the summer, filling up with a couple of tanks of 95-octane won't hurt. Normally, 92-octane is fine, but remember not to skimp on quality and use substandard fuel—excessive carbon buildup can cause more trouble. Stick to reputable gas stations, and regular maintenance is more important than anything else.
