LUBRICATION(H4DO) > General Description
SPECIFICATION
Lubrication method | Forced lubrication | ||||
Oil pump | Pump type | Trochoid type | |||
Number of teeth | Inner rotor | 11 | |||
Outer rotor | 12 | ||||
Outer rotor diameter ? Thickness | mm (in) | 77 ? 12 (3.03 ? 0.47) | |||
Performance (Oil temperature 120°C (248°F)) | 600 r/min | Discharge pressure | kPa (kg/cm2, psi) | 40 (0.4, 5.8) | |
Discharge rate | L (US qt, Imp qt)/min | 5.8 (6.1, 5.1) or more | |||
6,000 r/min | Discharge pressure | kPa (kg/cm2, psi) | 323 (3.3, 46.8) | ||
Discharge rate | L (US qt, Imp qt)/min | 55 (58.1, 48.4) or more | |||
Relief valve working pressure (2-step relief) | 1st opening pressure | kPa (kg/cm2, psi) | 150 (1.5, 21.7) | ||
Main opening pressure | kPa (kg/cm2, psi) | 570 (5.8, 82.6) | |||
Oil filter | Filter type | Full-flow filter type | |||
Filtration area | cm2 (sq in) | Outer diameter: 68 mm (2.68 in) (black) | 1,100 (171) | ||
Outer diameter: 67.4 mm (2.65 in) (blue) | 867 (134.3) | ||||
By-pass valve opening pressure | kPa (kg/cm2, psi) | 160 (1.6, 23.2) | |||
Outer diameter ? Width | mm (in) | Outer diameter: 68 mm (2.68 in) (black) | 68 ? 85 (2.68 ? 3.35) | ||
Outer diameter: 67.4 mm (2.65 in) (blue) | 67.4 ? 87.1 (2.65 ? 3.43) | ||||
Installation screw specifications | M 20 ? 1.5 | ||||
Oil pressure switch | Type | Immersed contact point type | |||
Operating voltage | 12 V | ||||
Warning light operating pressure | kPa (kg/cm2, psi) | 14.7 (0.1, 2.1) | |||
Proof pressure | kPa (kg/cm2, psi) | 981 (10, 142.2) | |||
Engine oil | Total capacity (at overhaul) | L (US qt, Imp qt) | 5.7 (6.0, 5.0) | ||
When replacing engine oil and oil filter | L (US qt, Imp qt) | 4.8 (5.1, 4.2) | |||
When replacing engine oil only | L (US qt, Imp qt) | 4.6 (4.9, 4.0) | |||
Specified oil:
CAUTION:
• Use 0W-20 (synthetic oil).
• 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.
NOTE:
The proper viscosity oil helps the engine maintain its ideal temperature, and cranking speed increased by reducing viscosity friction in hot condition.
Engine oil standard | SAE viscosity No. | ||

Those with SN “Resource Conserving” logo in case of API standard.
or

Those with GF-5 “starburst mark” displayed on top of the container in case of ILSAC standard.
0W-20 (synthetic oil)
Caution
ComponentInstallation
FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Engine Wiring HarnessINSTALLATION1. Route the engine wiring harness around the engine and connect connectors.• Structural diagram 1(1)Tumble generator valve actuator RH(2)Be careful of pinching when installing the intake manifold.(3)Engine harness conne ...
Dtc b1577 imm control module eeprom
IMMOBILIZER (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B1577 IMM CONTROL MODULE EEPROMDTC DETECTING CONDITION:• Body integrated unit malfunctioning• Failed to access ROM inside the body integrated unit.CAUTION:When the body integrated unit is replaced, ...
Basic inspection
WIRING SYSTEM > Basic Diagnostic ProcedureBASIC INSPECTION1. VOLTAGE MEASUREMENT1. Using a voltmeter, connect the negative lead to a good ground point or negative battery terminal and the positive lead to the connector or component terminal.2. Contact the positive lead of the voltmeter on connect ...