M45 V8-4.5L (VK45DE) (2006)
Reservoir tank engine coolant capacity (At MAX level): 0.6 l (5/8 US qt, 1/2 Imp qt)
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When engine coolant overflows air relief hole on heater hose, install air relief plug.
Air relief plug: 1.2 Nm (0.12 kg-m, 11 inch lbs.)
5. Install radiator cap.
6. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000 rpm.
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Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION: Watch water temperature gauge so as not to overheat engine.
7. Stop engine and cool down to less than approximately 50°C (122°F).
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Cool down using a fan to reduce the time.
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If necessary, refill engine coolant up to filler neck of thermostat housing.
8. Refill reservoir tank to MAX level line with engine coolant.
9. Repeat steps 4 through 7 two or more times with radiator cap installed until engine coolant level no longer drops.
10. Check cooling system for leaks with engine running.
11. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000 rpm with heater temperature controller
set at several position between COOL and WARM.
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Sound may be noticeable at heater unit.
12. Repeat step 11 three times.
13. If sound is heard, bleed air from cooling system by repeating steps 4 through 7 until engine coolant level no longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank, and radiator drain plug.
CAUTION: Be sure to clean drain plug and install with new O-ring.
Radiator drain plug: 1.2 Nm (0.12 kg-m, 11 inch lbs.)
If water drain plugs on cylinder block are removed, close and tighten them.
2. Remove air relief plug (1) on heater hose.
<-: Engine front
3. Fill thermostat housing with water until water spills from the air relief hole, then close air relief plug. Fill thermostat housing and reservoir tank
with water and reinstall radiator cap.
Air relief plug: 1.2 Nm (0.12 kg-m, 11 inch lbs.)
4. Run engine and warm it up to normal operating temperature.
5. Rev engine two or three times under no-load.
6. Stop engine and wait until it cools down.
7. Drain water from the system.
8. Repeat steps 1 through 7 until clear water begins to drain from radiator.