Contents Wiring diagrams Section: Lubrication System All sections

Lubrication (H4SO): Specifications Subaru Forester SH

Lubrication System 2 illustrations

SPECIFICATION

Lubrication methodForced lubrication
Oil pumpPump typeTrochoid type
Number of teethInner rotor9
Outer rotor10
Outer rotor diameter x thicknessMm (in)76 x 10 (2.99 x 0.47)
Tip clearance between inner and outer rotorsMm (in)0.04 - 0.14 (0.0016 - 0.0055)
Side clearance between inner rotor and pump caseMm (in)0.02 - 0.07 (0.0008 - 0.0028)
Case clearance between outer rotor and pump caseStandardMm (in)0.10 - 0.175 (0.0039 - 0.0069)
Performance (Oil temperature 80°C (176°F))600 RPMDischarge pressureKPa (kg/cm 2 , psi)98 (1.0, 14)
Discharge rateL (US qt, lmp qt)/min.4.6 (4.9, 4.0) or more
5,000 RPMDischarge pressureKPa (kg/cm 2 , psi)294 (3.0, 43)
Discharge rateL (US qt, lmp qt)/min.47.0 (49.7, 41.4) or more
Relief valve working pressureKPa (kg/cm 2 , psi)588 (6.0, 85)
Oil filterFilter typeFull-flow filter type
Filtration areaCm 2 (sq in)800 (124)
By-pass valve opening pressureKPa (kg/cm 2 , psi)160 (1.63, 23.2)
Outer diameter x widthMm (in)68 x 65 (2.68 x 2.56)
Installation screw specificationsM 20 x 1.5
Oil pressure switchTypeImmersed contact point type
Operating voltage - power consumption12 V - 3.4 W or less
Warning light operating pressureKPa (kg/cm 2 , psi)14.7 (0.15, 2.1)
Proof pressureKPa (kg/cm 2 , psi)981 (10,142) or more
Engine oilTotal capacity (Overhaul)L (US qt, lmp qt)5.0 (5.3, 4.4)
When replacing engine oil and oil filterL (US qt, lmp qt)4.2 (4.4, 3.7)
When replacing engine oil onlyL (US qt, lmp qt)4.0 (4.2, 3.5)

SPECIFICATION

Recommended oil

Oil suitable for the standard from the followings .

  1. For API standard, oil with SM "Energy Conserving" logo
  2. For ILSAC standard, oil with GF-4 "Star burst mark" label on the container

Scheme 14

Scheme 14
CAUTIONIt is acceptable to fill an engine with oil of another brand when replacing the oil, but make sure to use an oil with an API standard and SAE viscosity number specified by Subaru.

Note. The proper viscosity oil helps the engine maintain its ideal temperature, and cranking speed increased by reducing viscosity friction in hot condition. If the vehicle is used in regions with high temperatures or in other severe environments, use oil with the viscosities shown below.

API standard: SM or SL

SAE Viscosity No.: 30,40,10W-50,20W-40,20W-50

Scheme 15

Scheme 15: COMPONENT