See also:

Spark plugs
It may be difficult to replace the spark plugs. It is recommended that you have the spark plugs replaced by your SUBARU dealer. The spark plugs should be replaced according to the maintenance sched ...

Recommended grade and viscosity
Use only engine oil with the recommended grade and viscosity. Refer to “Engine oil”. NOTE Engine oil viscosity (thickness) affects fuel economy. Oils of lower viscosity provide better fuel econ ...

Adjustable level of each volume
...