Section 7 (Engine Lubrication System (H4DO)): General Description: Specification
WARNING: This page is about a different variant/trim than selected.
- Non-turbo model
| Lubrication method | Forced lubrication | ||||
| Oil pump | Pump type | Trochoid type | |||
| Number of teeth | Inner rotor | 11 | |||
| Outer rotor | 12 | ||||
| Outer rotor diameter x Thickness | mm (in) | 77 x 12 (3.03 x 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 x Width | mm (in) | Outer diameter: 68 mm (2.68 in) (black) | 68 x 85 (2.68 x 3.35) | ||
| Outer diameter: 67.4 mm (2.65 in) (blue) | 67.4 x 87.1 (2.65 x 3.43) | ||||
| Installation screw specifications | M 20 x 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/2 , 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) |
- Turbo model
| Lubrication method | Forced lubrication | ||||
|---|---|---|---|---|---|
| Oil pump | Pump type | Trochoid type | |||
| Number of teeth | Inner rotor | 11 | |||
| Outer rotor | 12 | ||||
| Outer rotor diameter x Thickness | mm (in) | 77 x 14 (3.03 x 0.55) | |||
| Performance (Oil temperature 120° C (248°F)) | 600 r/min | Discharge pressure | kPa (kg/cm2 , psi) | 35 (0.4, 5.1) | |
| Discharge rate | L (US qt, Imp qt)/min | 7.4 (7.8, 6.5) or more | |||
| 6.700 r/min | Discharge pressure | kPa (kg/cm2 , psi) | 321 (3.3, 46.6) | ||
| Discharge rate | L (US qt, Imp qt)/min | 60.2 (63.6, 53.0) or more | |||
| Relief valve working pressure | kPa (kg/cm2 , psi) | 700 (7.1, 102) | |||
| 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 x Width | mm (in) | Outer diameter: 68 mm (2.68 in) (black) | 68 x 85 (2.68 x 3.35) | ||
| Outer diameter: 67.4 mm (2.65 in) (blue) | 67.4 x 87.1 (2.65 x 3.43) | ||||
| Installation screw specifications | M 20 x 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) | 6.0 (6.3, 5.3) | ||
| When replacing engine oil and oil filter | L (US qt, Imp qt) | 5.1 (5.4, 4.5) | |||
| When replacing engine oil only | L (US qt, Imp qt) | 4.9 (5.2, 4.3) | |||
Specified oil:
CAUTION:
- Use 5W-30 (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.
- Do not use 0W-20 for turbo model. If used for turbo model, it may lead to trouble.
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. |
5W-30 (synthetic oil) |