Engine Lubrication System: General Description: Specification

Lubrication method					Forced lubrication
Oil pump	Pump type				Trochoid type
	Number of teeth	Inner rotor			7
		Outer rotor			8
	Outer rotor diameter x thickness			mm (in)	76 x 30.2 (2.99 x 1.19)
	Performance (Oil temperature 80°C (176°F))	600 RPM	Discharge pressure	kPa (kgf/cm² , psi)	98 (1.0, 14)
			Discharge rate	L (US qt, Imp qt)/min.	5.0 (5.3, 4.4) or more
		6, 000 RPM	Discharge pressure	kPa (kgf/cm² , psi)	392 (4.0, 57)
			Discharge rate	L (US qt, Imp qt)/min.	82.8 (87.5, 72.9) or more
Oil filter	Filter type				Full-flow filter type
	Filtration area			cm² (sq in)	1, 300 (201.5)
	By-pass valve opening pressure			kPa (kgf/cm² , psi)	160 (1.63, 23.2)
	Outer diameter x width			mm (in)	80 x 75 (3.15 x 2.95)
	Installation screw specifications				M 20 x 1.5
Oil pressure switch	Type				Immersed contact point type
	Operating voltage - power consumption				12 V - 3.4 W or less
	Warning light operating pressure			kPa (kgf/cm² , psi)	14.7 (0.15, 2.1)
	Proof pressure			kPa (kgf/cm² , psi)	980 (10.0, 142) or more
Engine oil	Total capacity (at overhaul)			L (US qt, Imp qt)	7.8 (8.2, 6.9)
	When replacing engine oil and oil filter			L (US qt, Imp qt)	6.5 (6.9, 5.7)
	When replacing engine oil only			L (US qt, Imp qt)	6.3 (6.7, 5.5)

Recommended oil:

CAUTION: It is acceptable to fill an engine with oil of another brand when replacing the oil, but make sure to use the following engine oil specified by Subaru.

Engine oil standard	Those with the API standard SM "Energy Conserving" or SN "Resource Conserving" logo.	or	Those with the ILSAC standard GF-4 or GF-5 "starburst mark" displayed on top of the container.
SAE viscosity No.

NOTE: The proper viscosity oil helps the engine maintain its ideal temperature, and cranking speed increased by reducing viscosity friction in hot condition.