Impreza F4-2.5L SOHC (2003)
CAUTION: When replenishing oil, it does not matter if the oil to be added is a different brand from that in the engine; however, use oil having the
API classification and SAE viscosity No. specified by SUBARU.
NOTE: If the vehicle is used in areas with very high temperatures or for other heavy duty applications, the following viscosity oils may be used:
API classification: SL, SJ or SH SAE viscosity No.: 30, 40, 10W-50, 20W-40, 20W50.
6) Close the engine oil filler cap.
7) Start the engine and warm it up for a while.
8) After the engine stops, recheck the oil level. If necessary, add engine oil up to the upper level on level gauge.