Subaru 2006 Legacy, Manual

Page: 768 / 4302

LU(H4SO)-2
General Description
LUBRICATION
1. General Description
A: SPECIFICATION
Recommended oil:
Those with an API standard SM “Energy Con-
serving” logo.
ILSAC standard GF-4 “starburst mark” dis-
played on container top.
CAUTION:
It is acceptable to fill an engine with oil of an-
other 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 tempera-
tures 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
Lubrication method Forced lubrication
Oil pump
Pump type Trochoid type
Number of teeth
Inner rotor 9
Outer rotor 10
Outer rotor diameter × thickness 78 × 10 mm (3.07 × 0.39 in)
Tip clearance between inner and outer
rotors
Standard 0.04 — 0.14 mm (0.0016 — 0.0055 in)
Limit 0.18 mm (0.0071 in)
Side clearance between inner rotor and
pump case
Standard 0.02 — 0.07 mm (0.0008 — 0.0028 in)
Limit 0.12 mm (0.0047 in)
Case clearance between outer rotor and
pump case
Standard 0.10 — 0.175 mm (0.0039 — 0.0069 in)
Limit 0.20 mm (0.0079 in)
Performance
(Oil temperature 80°C (176°F)
600 rpm
Discharge pressure
98 kPa (1.0 kgf/cm
2
, 14 psi)
Discharge rate 4.6
2
(4.9 US qt, 4.0 Imp qt)/min.
5,000 rpm
Discharge pressure
294 kPa (3.0 kgf/cm
2
, 43 psi)
Discharge rate 47.0
2
(49.7 US qt, 41.4 Imp qt)/min.
Relief valve working pressure
588 kPa (6.0 kgf/cm
2
, 85 psi)
Oil filter
Filter type Full-flow filter type
Filtration area
Outer diameter: 68 mm (2.68 in)
800 cm
2
(124 sq in)
Outer diameter: 65 mm (2.56 in)
470 cm
2
(73 sq in)
By-pass valve opening pressure
160 kPa (1.63 kgf/cm
2
, 23.2 psi)
Outer diameter × width
Outer diameter: 68 mm (2.68 in) 68 × 65 mm (2.68 × 2.56 in)
Outer diameter: 65 mm (2.56 in) 65 × 74.4 mm (2.56 × 2.93 in)
Installation screw specifications M 20 × 1.5
Oil pres-
sure switch
Type Immersed contact point type
Operating voltage — number of watts 12 V — 3.4 W or less
Warning light operating pressure
14.7 kPa (0.15 kgf/cm
2
, 2.1 psi)
Proof pressure
981 kPa (10 kgf/cm
2
, 142 psi) or more
Engine oil
Capacity(at overhaul) 4.8
2
(5.2 US qt, 4.3 Imp qt)
When replacing engine oil and oil filter 4.2
2
(4.4 US qt, 3.7 Imp qt)
When replacing engine oil only 4.0
2
(4.2 US qt, 3.5 Imp qt)
(1) SAE viscosity No. and applicable temperature
(2) Recommended
LU-02203
( C) -30 -20 -15 0 15 30 40
-22 -4 5 32 59 86 104
SAE (1)
( F)
10W-30, 10W-40
5W-30 (2)
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