COOLING(H4DO 1.5) > General Description
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Cooling system |
Electric fan + Forced engine coolant circulation system | ||||
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Total engine coolant capacity |
L (US qt, Imp qt) |
1.5 L model |
AT model: approx. 7.5 (7.9, 6.6) | ||
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MT model: approx. 7.6 (8.0, 6.7) | |||||
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2.0 L model |
Without ATF warmer |
AT model: approx. 6.8 (7.2, 6.0) | |||
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With ATF warmer |
AT model: approx. 7.2 (7.6, 6.3) | ||||
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Without engine oil cooler |
MT model: approx. 6.9 (7.3, 6.1) | ||||
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With engine oil cooler |
MT model: approx. 7.2 (7.6, 6.3) | ||||
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Water pump |
Type |
Centrifugal impeller type | |||
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Discharge performance I |
Discharge rate |
L (US gal, Imp gal)/min. |
20 (5.3, 4.4) | ||
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Pump speed — Discharge pressure |
760 rpm — 2.9 kPa (0.3 mAq) | ||||
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Engine coolant temperature |
80°C (176°F) | ||||
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Discharge performance II |
Discharge rate |
L (US gal, Imp gal)/min. |
100 (26.4, 22.0) | ||
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Pump speed — Discharge pressure |
3,000 rpm — 49.0 kPa (5.0 mAq) | ||||
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Engine coolant temperature |
80°C (176°F) | ||||
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Discharge performance III |
Discharge rate |
L (US gal, Imp gal)/min. |
200 (52.8, 44.0) | ||
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Pump speed — Discharge pressure |
6,000 rpm — 225.4 kPa (23.0 mAq) | ||||
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Engine coolant temperature |
80°C (176°F) | ||||
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Impeller diameter |
mm (in) |
76 (2.99) | |||
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Number of impeller vanes |
8 | ||||
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Pump pulley diameter |
mm (in) |
60 (2.36) | |||
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Clearance between impeller and pump case |
mm (in) |
Standard |
0.5 — 1.5 (0.020 — 0.060) | ||
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Thermostat |
Type |
Wax pellet type | |||
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Starting temperature to open |
1.5 L model |
Engine side |
89 — 92°C (192 — 198°F) | ||
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2.0 L model |
Engine side |
86 — 90°C (187 — 194°F) | |||
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ATF warmer side |
69 — 73°C (156 — 163°F) | ||||
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Fully opens |
1.5 model |
Engine side |
98°C (208°F) | ||
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2.0 L model |
Engine side |
95°C (203°F) | |||
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ATF warmer side |
84°C (183°F) | ||||
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Valve lift |
mm (in) |
Engine side |
9.0 (0.354) or more | ||
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ATF warmer side |
8.0 (0.315) or more | ||||
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Valve bore |
mm (in) |
35 (1.38) | |||
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Radiator fan |
Motor input |
Main fan |
90 W | ||
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Sub fan (model with A/C) |
90 W | ||||
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Fan diameter / Blade |
Main fan |
300 mm (11.81 in)/4 | |||
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Sub fan (model with A/C) |
300 mm (11.81 in)/5 | ||||
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Radiator |
Type |
Down flow, pressure type | |||
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Core dimensions |
Width × Height × Thickness |
mm (in) |
687.4 × 340 × 16 (27.06 × 13.39 × 0.63) | ||
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Pressure range in which cap valve is open |
kPa (kgf/cm2, psi) |
Above |
Standard |
93 — 123 (0.95 — 1.25, 14 — 18) | |
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Service limit |
83 (0.85, 12) | ||||
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Below |
Standard |
−1.0 — −4.9 (−0.01 — −0.05, −0.1 — −0.7) | |||
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Fins |
Corrugated fin type | ||||
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Reservoir tank |
Capacity |
L (US qt, Imp qt) |
0.45 (0.48, 0.40) | ||
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Recommended materials |
Item number |
Alternative | |
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Coolant |
SUBARU SUPER COOLANT |
K0670Y0001 |
Non-amine type * |
When using alternative engine coolant, follow the instructions of the engine coolant for its diluting water, maintenance cycle, freezing concentration, etc.