LUBRICATION(H4DO 1.5) > General Description

SPECIFICATION

Lubrication method

Forced lubrication

Oil pump

Pump type

Trochoid type

Number of teeth

Inner rotor

9

Outer rotor

10

Outer rotor diameter × thickness

mm (in)

76 × 10 (2.99 × 0.39)

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

Specification

mm (in)

0.10 — 0.175 (0.0039 — 0.0069)

Performance

(Oil temperature 80°C (176°F))

600 rpm

Discharge pressure

kPa (kgf/cm2, psi)

98 (1.0, 14)

Discharge rate

L (US qt, Imp qt)/min.

4.6 (4.9, 4.0) or more

5,000 rpm

Discharge pressure

kPa (kgf/cm2, psi)

294 (3.0, 43)

Discharge rate

L (US qt, Imp qt)/min.

47.0 (49.7, 41.4) or more

Relief valve working pressure

kPa (kgf/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 (kgf/cm2, psi)

160 (1.63, 23.2)

Outer diameter × width

mm (in)

Outer diameter: 68 mm (2.68 in)

68 × 65 (2.68 × 2.56)

Outer diameter: 65 mm (2.56 in)

65 × 74.4 (2.56 × 2.93)

Installation screw specifications

 

M 20 × 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 (kgf/cm2, psi)

14.7 (0.15, 2.1)

Proof pressure

kPa (kgf/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

Models with oil cooler

L (US qt, Imp qt)

4.3 (4.5, 3.8)

Models without oil cooler

L (US qt, Imp qt)

4.2 (4.4, 3.7)

When replacing engine oil only

L (US qt, Imp qt)

4.0 (4.2, 3.5)

Recommended oil:

Oil which meets the following specification:

• For API standard, those with the SM or SL “Energy Conserving“ logo.

• For ILSAC standard, those with the GF-4 or GF-3 “Starburst mark” displayed on top of the container.

• For ACEA standard, those with the A1, A2, or A3 displayed on top of the container.

(1)

SAE viscosity No. and applicable temperature

CAUTION:

• Do not use 0W-20 for turbo model.

• It is acceptable to fill an engine with oil of another brand when replacing the oil, but make sure to use an oil with an API standard and SAE viscosity number specified by Subaru.

NOTE:

If the vehicle is used in regions with 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