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Home >> Nissan-Datsun >> 2002 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System Qr25DE >> Engine Coolant >> Changing Engine Coolant >> Draining Engine Coolant

Draining Engine Coolant

Open the radiator drain plug at the bottom of radiator, and remove the radiator cap.

Fig 1: Locating Radiator Drain Plug
G02007447Courtesy of NISSAN MOTOR CO., U.S.A.

When draining all of the coolant in the system, also perform the following two steps:

  1. Open drain plug on cylinder block.
    Fig 2: Locating Coolant Drain Plug On Cylinder Block
    G02007448Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Check drained coolant for contaminants such as rust, corrosion or discoloration.

    If contaminated, flush engine cooling system. Refer to FLUSHING COOLING SYSTEM.