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 with an octane rating of 87 AKI (90 RON) or higher may be temporarily used. For optimum engine performance and driveability, it is required that you use premium grade unleaded gasoline.

NOTE
Be sure to use premium unleaded gasoline of 91 AKI (95 RON) or higher for turbo engine models. If other gasoline (lower than 91 AKI (95 RON)) is used, knocking, reduced output and poor accelerator response will result.

    See also:

    OFF button
    The automatic climate control system turns off (the air conditioner compressor and fan turn off) when the “OFF” button is pressed. When the “OFF” button is pressed, the outside air circulation mo ...

    Besting Midsize Benchmarks
    Built on an all-new platform, the 2010 Subaru Legacy offers roominess comparable to mainstream midsize sedans, with a focus on usable space and long-distance driving comfort. The wheelbase grows t ...

    Lubrication oil circulation in the refrigerant circuit
    Operate the air conditioner compressor at a low engine speed (at idle or low driving speeds) a few minutes each month during the off-season to circulate its oil. ...