Subaru Forester: Fuel octane rating
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).
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. Contact your SUBARU dealer if you use a fuel with the specified octane rating and your vehicle knocks heavily or persistently.
Turbo models
The engine is designed to operate using
premium unleaded gasoline with an
octane rating of 91 AKI (95 RON) or
higher. If premium unleaded gasoline is
not available, regular unleaded gasoline
...
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 contro ...
See also:
Improving Fuel Economy
Vehicle Maintenance
A properly maintained vehicle
maximizes fuel economy. Poor
maintenance can significantly reduce
fuel economy. Always maintain your
vehicle according to the maintenance
m ...
All-Wheel Drive (AWD) lock switch operations
The AWD LOCK switch located on the lower
side of the instrument panel. This switch is used
to select the AUTO or LOCK mode depending
on the driving conditions.
Each time you push the lower pa ...
Emergency starting
Jump starting Jump starting can be dangerous if done incorrectly. Therefore,
to avoid harm to yourself or damage to your vehicle or battery, follow the jump
starting procedures listed on page 6-6. ...
