Should the Sonata 8 use 92 or 95 octane gasoline?
2 Answers
The Sonata 8 should use 92 octane gasoline. Gasoline octane rating: It is 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. Standard gasoline is composed of isooctane and n-heptane. A higher octane number is not necessarily better; the appropriate gasoline octane should be selected based on the engine's compression ratio. Standard gasoline is composed of isooctane and n-heptane. Isooctane has good anti-knock properties, and its octane number is defined as 100; n-heptane has poor anti-knock properties and is prone to knocking in gasoline engines, so its octane number is defined as 0. If the gasoline has an octane rating of 90, it means that the gasoline has the same anti-knock performance as standard gasoline containing 90% isooctane and 10% n-heptane.
I've been driving a Sonata 8 for several years, and the manual recommends using 92-octane gasoline. I've always followed this, and it runs smoothly for daily city commuting with no engine issues at all. 92-octane is significantly cheaper and perfectly adequate for regular commuting—no need to waste money on 95-octane unless the manual specifically requires it or you frequently drive at high speeds. Gasoline quality is also crucial; just stick to reputable gas stations and avoid low-quality fuel. Regular maintenance of the fuel system ensures the car runs without any problems. Saving money while staying safe—I think 92-octane is a smart choice.
