noun
high-octane gasoline; premium petrol
Common term for premium-grade fuel at Japanese gas stations. Often shortened to ハイオク in casual conversation.
この車はハイオクガソリンじゃないと動かない。
This car won't run on anything but high-octane gasoline.
ハイオクガソリンはレギュラーより高い。
High-octane gasoline is more expensive than regular.
Loanword compound from English 'high-octane' + 'gasoline'. The abbreviation ハイオク is widely used in everyday speech.