Engine Lubrication System (H6DO): General Description: Specification

GENERAL 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)	86 x 13 (3.39 x 0.51)
	Tip clearance between inner and outer rotors mm (in)			0.04 - 0.14 (0.0016 - 0.0055)
	Side clearance between inner rotor and pump case mm (in)			0.020 - 0.046 (0.0008 - 0.0018)
	Case clearance between outer rotor and pump case mm (in)			0.110 - 0.175 (0.0043 - 0.0069)
Oil filter	Filter type			Full-flow filter type
	Filtration area		cm² (sq in)	1,300 (201.5)
	By-pass valve opening pressure		kPa (kg/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
Relief valve working pressure			kPa (kg/cm² , psi)	708 (7.2, 102.7)
Oil pressure switch	Type			Immersed contact point type
	Operating voltage - power consumption			12 V - 3.4 W or less
	Warning light operating pressure		kPa (kg/cm² , psi)	15 (0.15, 2.2)
	Proof pressure		kPa (kg/cm² , psi)	980 (10.0, 142) or more
Engine oil	Capacity (at overhaul)		l (US qt, lmp qt)	7.2 (7.6, 6.3)
	When replacing engine oil and oil filter		l (US qt, lmp qt)	5.7 (6.0, 5.0)
	When replacing engine oil only		l (US qt, lmp qt)	5.5 (5.8, 4.8)

Recommended oil:

Those with an API standard SM "Energy Conserving" logo.

ILSAC standard GF-4 "Star burst mark" label on the container

Fig 1: SAE Viscosity Chart

Courtesy of SUBARU OF AMERICA, INC.

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 standard and SAE viscosity No. designated by SUBARU.

NOTE: If the vehicle is used in areas with very high temperatures or for other heavy duty applications, the following viscosity oils must be used: API standard: SM or SL
SAE viscosity No.: 30, 40, 10W-50, 20W-40, 20W-50