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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1464 (Maintenance) >> Engine Maintenance >> Changing Engine Coolant >> Refilling Engine Coolant

Refilling Engine Coolant

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install reservoir tank, and radiator drain plug.
    CAUTION: Be sure to clean drain plug and install with new O-ring.
    • Radiator drain plug: 
      • 0.78 - 1.6 N.m (0.08 - 0.16 kg-m, 7 - 14 in-lb) 

    If water drain plugs on cylinder block are removed, close and tighten them. Refer to  "ASSEMBLY ".

  2. Make sure that each hose clamp has been firmly tightened.
  3. Remove air relief plug on heater hose.
    Fig 1: Removing Air Relief Plug On Heater Hose
    G02402862Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Fill radiator and reservoir tank to specified level.
    • Pour engine coolant through engine coolant filler neck slowly of less than 2 l (2-1/8 US qt, 1-3/4 Imp 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  "RECOMMENDED FLUIDS AND LUBRICANTS  "

      Engine coolant capacity 

      (with reservoir tank at "MAX" level) 

      • : Approx. 8.7 l (9-1/4 US qt, 7-5/8 Imp qt) 
      Fig 2: Coolant Level In Radiator Reservoir Tank
      G02402863Courtesy of NISSAN MOTOR CO., U.S.A.

      Reservoir tank capacity (at "MAX" level) 

      • : 0.8 l (7/8 US qt, 3/4 Imp qt) 
    • When engine coolant overflows air relief hole on heater hose, install air relief plug with new O-ring.

    Air relief plug: 

    • : 0.78 - 1.6 N.m (0.08 - 0.16 kg-m, 7 - 14 in-lb) 
    Fig 3: Checking Coolant Level
    G02402864Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Install radiator cap.
  6. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000 rpm.
    • Make sure thermostat condition by touching radiator hose (lower) to see 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).
    • Cool down using fan to reduce the time.
    • If necessary, refill radiator up to filler neck with engine coolant.
  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".
    • Sound may be noticeable at heater unit.
  12. Repeat step 10 three times.
  13. If sound is heard, bleed air from cooling system by repeating step 4 through 7 until engine coolant level no longer drops.
    • Clean excess engine coolant from engine. 
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