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:

    Equipment & Pricing
    Given that all-wheel drive is standard, the Forester packs impressive value. Subaru shaved some $1,200 off the sticker price for 2009, so the 2.5X now starts at $19,995 without the destination cha ...

    Automatic climate control system (if equipped)
    NOTE ● Operate the automatic climate control system when the engine is running. ● The blower fan rotates at a low speed when the engine coolant temperature is low. For efficient defog ...

    Low beam light bulbs
    1. Pull off the fender lining. For details, refer to “Pulling off the fender lining” F11- 7. 2. Remove the bulb cover, by turning it counterclockwise. 3. Disconnect the electrical connector. ...