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:
If no steam is coming from the engine compartment
NOTE
For details about how to check the coolant level or how to add coolant, refer
to “Engine coolant” F11-17.
1. Keep the engine running at idling speed.
2. Open the hood to ventilate the engine ...
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