Engine Lubrication System (H4DO): General Description: Specification
GENERAL SPECIFICATION CHART
| 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) | 77x12(3.03x0.47) | |||
| Performance (Oil temperature 120°C (248°F)) | 600 rpm | Discharge pressure | kPa (kgf/cm2 , psi | 40 (0.4, 5.8) | |
| Discharge rate | l (US qt, lmp qt)/min. | 5.8 (6.1, 5.1) or more | |||
| 6, 000 rpm | Discharge pressure | kPa (kgf/cm2 , psi | 323 (3.3, 46.8) | ||
| Discharge rate | l (US qt, lmp qt)/min. | 55 (58.1, 48.4) or more | |||
| Relief valve working pressure (2-step relief) | 1st opening pressure | kPa (kgf/cm2 , psi) | 150(1.5, 21.7) | ||
| Main opening pressure | kPa (kgf/cm2 , psi) | 570 (5.8, 82.6) | |||
| Oil filter | Filter type | Full-flow filter type | |||
| Filtration area | cm2 (sq in) | 1, 300(202) | |||
| By-pass valve opening pressure | kPa (kgf/cm2 , psi) | 160(1.6, 23.2) | |||
| Outer diameter x width | mm (in) | 80x75(3.15x2.95) | |||
| Installation screw specifications | M 20x1.5 | ||||
| Oil pressure switch | Type | Immersed contact point type | |||
| Operating voltage | 12V | ||||
| Warning light operating pressure | kPa (kgf/cm2 , psi) | 14.7(0.1, 2.1) | |||
| Proof pressure | kPa (kgf/cm2 , psi) | 981 (10, 142.2) or more | |||
| Engine oil | Total capacity (at overhaul) | l (US qt, lmp qt) | 6.1 (6.4, 5.4) | ||
| When replacing engine oil and oil filter | l (US qt, lmp qt) | 5.2 (5.5, 4.6) | |||
| When replacing engine oil only | l (US qt, lmp qt) | 5.0 (5.3, 4.4) | |||
Recommended 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.