BRZ _ U . book 223 ページ 2022 年 3 月 29 日 火曜日 午後 3 時 59 分
7-1 . Fuel �
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CAUTION
Use of a fuel which is low in quality or use of an inappropriate fuel additive may cause damage to the engine and / or fuel system .
Some gas stations , particularly those in high altitude areas , offer fuels posted as regular octane gasoline with an octane rating below 93 AKI ( 98 RON ). Use of those fuels are not recommended .
■ Fuel Requirements
The engine is designed to operate using unleaded gasoline with an octane rating of 93 AKI ( 98 RON ) or higher .
If unleaded gasoline with an octane rating of 93 AKI ( 98 RON ) is not available , unleaded gasoline with an octane rating of 91 AKI ( 95 RON ) may be used with no detriment to engine durability or driveability .
However , you may notice a slight decrease in maximum engine performance and you may hear some knocking ( pinging ) from the engine while using 91 AKI ( 95 RON ) fuel . Use of 91 AKI ( 95
RON ) fuel will not affect your warranty coverage . ▼ Fuel octane rating
Using a gasoline with a lower octane rating can cause persistent and heavy knocking , which can damage the engine . Do not be concerned if your vehicle sometimes knocks lightly when you drive up a hill or when you accelerate . See your dealer or a qualified service technician if you use a fuel with the specified octane rating and your vehicle knocks heavily or persistently .
▽ RON
This octane rating is the Research Octane Number .
▽ AKI
This octane rating is the average of the Research Octane and Motor Octane numbers and is commonly referred to as the Anti Knock Index ( AKI ).
▼ Unleaded gasoline
The neck of the fuel filler pipe is designed to accept only an unleaded gasoline filler nozzle . Under no circumstances should leaded gasoline be used because it will damage the emission control system and may impair driveability and fuel economy .