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
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Engine hood
CAUTION
When you open the engine hood,
do not stand the wiper blades up.
Furthermore, while the hood is
open, do not operate the windshield
wipers. Doing so could
result in damage to the engine
hood and wiper blades.
Be extremely careful not to catch
fingers or other objects wh ...