ENGINE COOLANT

■ WARNING ■

• Never change engine coolant when the engine is hot to avoid being scalded.
  
• Wrap a thick cloth around reservoir tank cap and carefully remove reservoir tank cap. First, turn reservoir tank cap a quarter of a turn to release built-up pressure. Then turn reservoir tank cap all the way.
  

1.Remove under cover.

2.Open radiator drain plug (1) at the bottom of radiator, and then remove reservoir tank cap.




: Vehicle front



When draining all of engine coolant in the system, open water drain plugs on cylinder block. Refer to Setting (GT-R certified NISSAN dealer).

3.Remove reservoir tank if necessary, drain engine coolant, and clean reservoir tank before installing.

4.Check drained engine coolant for contaminants such as rust, corrosion or discoloration.If contaminated, flush the engine cooling system. Refer to Flushing.

1.Install reservoir tank if removed.

2.Install radiator drain plug.
■ CAUTION ■
Be sure to clean drain plug and install with new O-ring.



Tightening torque

: Refer to Exploded View (GT-R certified NISSAN dealer).


If water drain plugs on cylinder block are removed, close and tighten them. Refer to Disassembly and Assembly (GT-R certified NISSAN dealer).

3.Check that each hose clamp has been firmly tightened.

4.Fill radiator to specified level.


• Pour engine coolant through engine coolant filler neck slowly of less than 2 (2-1/8 US qt, 1-3/4 lmp qt) a minute to allow air in system to escape.
• Use Genuine NISSAN Long Life Antifreeze/Coolant or equivalent mixed with water (distilled or demineralized). Refer to Fluids and Lubricants.
  

  Engine coolant capacity	: Refer to Periodical Maintenance Specification.
  (With reservoir tank at “MAX” level)

  
  

5.Install radiator cap.

6.Fill reservoir tank to “MAX” level line with engine coolant if necessary.




A	: MAX
B	: MIN





Reservoir tank engine coolant capacity	: Refer to Periodical Maintenance Specification.
(At “MAX” level)

7.Install reservoir tank cap, and then start the engine.

8.Warm up engine until thermostat opens. Standard for warming-up time is approximately 10 minutes at 3,000 rpm.
• Check 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.

9.Stop the engine and cool down to less than approximately 50°C (122°F).
• Cool down using fan to reduce the time.
• If necessary, refill radiator up to filler neck with engine coolant.

10.Refill reservoir tank to “MAX” level line with engine coolant.

11.Repeat steps 6 through 9 two or more times with radiator cap and reservoir tank cap installed until engine coolant level no longer drops.

12.Check cooling system for leakage with engine running.

13.Warm up the 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 positions between “COOL” and “WARM”.
• Sound may be noticeable at heater unit.

14.Repeat step 13 three times.

15.If sound is heard, bleed air from cooling system by repeating steps from 3 to 13 until engine coolant level no longer drops.

1.Install reservoir tank if removed, and radiator drain plug.
■ CAUTION ■
Be sure to clean drain plug and install with new O-ring.



Tightening torque

: Refer to Exploded View (GT-R certified NISSAN dealer).


If water drain plugs on cylinder block are removed, close and tighten them. Refer to Disassembly and Assembly (GT-R certified NISSAN dealer).

2.Fill radiator and reservoir tank with water.

3.Run the engine and warm it up to normal operating temperature.

4.Rev the engine two or three times under no-load.

5.Stop the engine and wait until it cools down.

6.Drain water from the system. Refer to Draining.

7.Repeat steps 1 through 6 until clear water begins to drain from radiator.