Lubrication (H4DOTC): General Description: Specification
LUBRICATION SPECIFICATION
| 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 value | mm (in) | 0.10 - 0.175 (0.0039 - 0.0069) | |||
| Performance at 80°C (176°F) | 600 RPM | Discharge pressure | kPa (kg/cm2 , psi) | 98 (1.0, 14) | ||
| Discharge | Lambda (US qt, Imp qt)/min. | 4.6 (4.9, 4.0) or more | ||||
| 5,000 RPM | Discharge pressure | kPa (kg/cm2 , psi) | 294 (3.0, 43) | |||
| Discharge | Lambda (US qt, Imp qt)/min. | 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) | |||||
| By-pass 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 | ||||
| Working voltage - wattage | 12 V - 3.4 W or less | |||||
| Warning light activation pressure | kPa (kg/cm2 , psi) | 14.7 (0.15, 2.1) | ||||
| Proof pressure | kPa (kg/cm2 , psi) | 981 (10, 142) or more | ||||
| Oil capacity (at replacement) | Lambda (US qt, Imp qt) | 4.0 (4.2, 3.5) | ||||
Recommended oil:
API standard SL with the "Energy Conserving" logo is printed (if you cannot obtain the oil with SL grade, you may use SJ grade "ENERGY CONSERVING" oil.)
ILSAC standard, GF-3 or New API certification mark (Star burst mark) label is on the container
The proper viscosity helps vehicle get good cold and hot starting by reducing viscous friction and thus increasing cranking speed.
CAUTION:
When replenishing oil, it does not matter if the oil to be added is a different brand from that in the engine; however, use oil having the API standard and SAE viscosity No. designated by SUBARU.
NOTE:
If the vehicle is used in areas with very high temperatures or for other heavy duty applications, the following viscosity oils may be used: API standard: SL or SJ
SAE Viscosity No.: 30, 40, 10W-50, 20W-40, 20W-50.