Cooling System Flushing

General Procedure 

• 1.
  
  Add cooling system flush to the cooling system and follow the directions on the package.

• 2.
  
  Drain the cooling system. Refer to Cooling System Draining, Filling and Bleeding .

• 3.
  
  Remove the radiator. Refer to Radiator - 2.0L GTDI , Radiator - 3.5L Ti-VCT  or Radiator - 3.5L GTDI .

• 4.
  
  
  NOTE: Radiator internal pressure must not exceed 137.9 kPa (20 psi), or the radiator can be damaged

  Backflush the radiator with the radiator in an upside-down position with a high-pressure hose in the lower hose location and backflush.

• 5.
  
  For 2.0L GTDI, remove the thermostat housing. Refer to Thermostat Housing - 2.0L GTDI . For 3.5L Ti-VCT, remove the thermostat. Refer to Thermostat - 3.5L Ti-VCT . For 3.5L GTDI, remove the thermostat. Refer to Thermostat - 3.5L GTDI .

• 6.
  
  Position the high-pressure water hose into the engine through the upper radiator hose and backflush the engine.

• 7.
  
  For 2.0L GTDI, install the thermostat housing. Refer to Thermostat Housing - 2.0L GTDI . For 3.5L Ti-VCT, install the thermostat. Refer to Thermostat - 3.5L Ti-VCT . For 3.5L GTDI, install the thermostat. Refer to Thermostat - 3.5L GTDI .

• 8.
  
  Install the radiator. Refer to Radiator - 2.0L GTDI , Radiator - 3.5L Ti-VCT  or Radiator - 3.5L GTDI .

• 9.
  
  Fill and bleed the cooling system. Refer to Cooling System Draining, Filling and Bleeding .