Lubrication (H4DOTC): General Description: Specification
GENERAL SPECIFICATIONS
| Lubrication method | Forced lubrication | ||||
| Oil pump | Pump type | Trochoid type | |||
| Number of teeth | Inner rotor | 9 | |||
| Outer rotor | 10 | ||||
| Outer rotor diameter x thickness | mm (in) | 78 x 10 (3.07 x 0.47) | |||
| Tip clearance between inner and outer rotors | mm (in) | 0.04 - 0.14 (0.0016 - 0.0055) | |||
| Side clearance between inner rotor and pump case | mm (in) | 0.02 - 0.07 (0.0008 - 0.0028) | |||
| Case clearance between outer rotor and pump case | Standard | mm (in) | 0.10 - 0.175 (0.0039 - 0.0069) | ||
| Performance (Oil temperature 80°C (176°F) | 600 rpm | Discharge pressure | kPa (k9/cm2 , psi) | 98 (1.0, 14) | |
| Discharge pressure | l (US qt, lmp qt)/min. | 4.6 (4.9, 4.0) or more | |||
| 5,000 rpm | Discharge pressure | kPa (kg/cm2 , psi) | 294 (3.0, 43) | ||
| Discharge rate | l (US qt, Imp qt)/min. rate | 47.0 (49.7, 41.4) or more | |||
| Relief valve working pressure | kPa (kg/cm2 , psi) | 588 (6.0, 85) | |||
| Oil filter | Filter type | Full-flow filter type | |||
| Filtration area | cm2 (sq in) | Outer diameter: 68 mm (2.68 in) | 800 (124) | ||
| Outer diameter: 65 mm (2.56 in) | 470 (72.9) | ||||
| bypass valve opening pressure | kPa (kg/cm2 , psi) | 160 (1.63, 23.2) | |||
| Outer diameter x width | mm (in) | Outer diameter: 68 mm (2.68 in) | 68 x 65 (2.68 x 2.56) | ||
| Outer diameter: 65 mm (2.56 in) | 65 x 74.4 (2.56 x 2.93) | ||||
| Installation screw specifications | M 20 x 1.5 | ||||
| Oil pressure switch | Type | Immersed contact point type | |||
| Operating voltage - power consumption | 12 V - 3.4 W or less | ||||
| Warning light operating pressure | kPa (kg/cm2 , psi) | 14.7 (0.15,2.1) | |||
| Proof pressure | kPa (kg/cm2 , psi) | 981 (10, 142) or more | |||
| Engine oil | Total capacity (Overhaul) | l (US qt, Imp qt) | 5.0 (5.3, 4.4) | ||
| When replacing engine oil and oil filter | l (US qt, Imp qt) | 4.3 (4.5, 3.8) | |||
| When replacing engine oil only | l (US qt, Imp qt) | 4.0 (4.2, 3.5) | |||
Recommended oil:
Those with an API standard SM "Energy Conserving" logo.
ILSAC standard GF-4 "Star burst mark" label on the container
The proper viscosity oil helps the engine maintain its ideal temperature, and cranking speed increased by reducing viscosity friction in hot condition.
CAUTION:
When replacing oil, it does not matter if the oil to be added is a different brand from that in the engine; however, use oil with SUBARU designated API standard and SAE viscosity numbers.
NOTE:
If the vehicle is used in regions of 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