Should the Yamaha Cygnus i use 95 or 92 octane fuel?
2 Answers
Yamaha Cygnus i has a relatively high engine compression ratio, making it more suitable for 95 octane gasoline. Related introduction: 1. Overview: Gasoline, known as Gasoline (US)/Petrol (UK) in English, appears as a transparent liquid, is flammable, with a distillation range of 30°C to 220°C. Its main components are C5～C12 aliphatic hydrocarbons and cycloalkanes, along with a certain amount of aromatic hydrocarbons. Gasoline has a high octane number (anti-knock combustion performance) and is classified into grades such as 90, 93, 95, and 97 based on octane ratings. 2. Extension: Gasoline is produced by refining different gasoline components obtained from petroleum refining, including straight-run gasoline components, catalytic cracking gasoline components, and catalytic reforming gasoline components, then blending them with high-octane components. It is primarily used as fuel for spark-ignition internal combustion engines in automobiles.
I've been using 92-octane gasoline for my Yamaha Jog-i all these years without any issues. The Jog-i's engine has a relatively low compression ratio, and the anti-knock capability of 92-octane fuel matches it perfectly. After filling up, the power delivery is smooth and acceleration is effortless. I've tried 95-octane fuel before, but the difference was negligible - acceleration didn't improve, and it just wasted money. Each refueling costs a few yuan more, which adds up to hundreds of yuan saved annually. Regular maintenance is far more important - don't neglect oil changes and spark plug replacements. Beginners should refer to the manual, which emphasizes that 92-octane is most suitable. If you're on a tight budget, 92-octane is the most economical choice - don't be fooled into buying higher-octane fuel. The Jog-i isn't that delicate. Sticking with 92-octane maintains excellent vehicle condition.
