Draining Engine Coolant

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

Fig 1: Locating Radiator Drain Plug
Courtesy of NISSAN MOTOR CO., U.S.A.
Remove cylinder block drain plug and air relief plug.

Fig 2: Removing Cylinder Block Drain Plug
Courtesy of NISSAN MOTOR CO., U.S.A.
Check drained coolant for contaminants such as rust, corrosion or discoloration. If contaminated, flush engine cooling system.
Refer to "FLUSHING COOLING SYSTEM ".