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:
2.0-L DOHC engines on the 2.0X and 2.0XS
Fuel economy has been improved with the redesigned DOHC cylinder head, as
well as through optimization of the compression ratio and reduction of the
volume of the combustion chamber.
Low-end and ...
3.6 L models
1) Power steering fluid reservoir (page 11-27)
2) Differential gear oil level gauge (page 11-26)
3) Automatic transmission fluid level gauge (page 11-24)
4) Brake fluid reservoir (page 11-28)
5) ...
Rear differential gear oil
There is no oil level gauge. To check the rear differential gear oil level, we
recommend that you consult your SUBARU dealer for inspection. ...