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.
See also:
Brake booster
The brake booster uses engine manifold
vacuum to assist braking force. Do not
turn off the engine while driving because
that will turn off the brake booster, resulting
in poor braking power.
...
Off road driving
WARNING
● Always maintain a safe driving speed according to the road and weather conditions
in order to avoid having an accident on a sharp turn, during sudden braking or under
other simila ...
Selecting preset stations
Presetting a station with a preset button allows you to select that station in
a single operation. Up to six AM, FM1, FM2 and FM3 stations each may be preset. ...