17:30. Discharge, washing and filling of the cooling system

Each 38 000 km of a run or time in two years

Do not allow hit of antifreeze on your skin and the painted surfaces of the car. At hit immediately wash away a plentiful amount of water. Antifreeze is extremely toxic and deadly at hit in an organism. Do not leave antifreeze in an open container or spilled on a floor; its sweetish smell can easily attract to itself children or pets. Consult about local rules of utilization of the fulfilled antifreeze. In many areas there are special centers for its acceptance.

The cooling system has to be drained, washed out regularly and again be filled. This procedure is made for maintenance of quality of cooling mix and the prevention of formation of corrosion which reduces overall performance of the cooling system and can serve as an engine cause of failure. During service of the cooling system it is also necessary to check a condition of all hoses and a cover of a radiator and in case of need to replace defective components.



  1. If the car just returned from a trip, before the procedure wait several hours before full cooling of the engine.
  2. After the engine cooled down, uncover a broad tank or a radiator. If the cover has to be opened when the engine cooled down not completely, do it slowly and with respect for precautions to avoid burns.
  1. Place under a radiator a big container for collecting a cooler. Where there is a drain stopper, unscrew it (depending on model, you can be necessary for this steam of flat-nose pliers or the screw-driver). Where there is no drain stopper, you should disconnect the lower hose from a radiator.
  1. While the cooler pours out, check a condition of hoses of a radiator, a heater and collars (if necessary see the Section Check of Fuel System).
  2. Replace defective hoses and collars (see the Head the Cooling system where the procedure of replacement is in details described).



  1. After full drainage of system wash out a radiator clear water from a garden hose so that from a drain opening or the lower hose clear water poured out. If the radiator strongly rusted, is damaged or proceeds, it should be removed (see the Head the Cooling system) and to send to repair shop to the specialist in radiators.
  2. The washing described above will remove various deposits from a radiator, but will not be able to remove a rust and a scum from the surfaces of the engine and a pipe of cooling. All this can be removed by means of a chemical cleaner. For implementation of this procedure follow instructions of the manufacturer of a cleaner. Before washing of the engine open a drain stopper of the block of cylinders.
  3. On respectively the equipped models remove an overflow hose from a broad tank. Drain a tank, wash out it clear water and connect a hose.


Tighten a drain stopper of a radiator or connect the lower hose of a radiator. Establish and tighten a drain stopper of the block of cylinders.

Four-cylinder engines


  1. Slowly fill in in a radiator a new cooler (40%/60% antifreeze mix with water) before its filling. Fill in a cooler in a broad tank to the lower mark.
  2. Without closing a radiator cover, in well aired room start the engine and banish it until the thermostat opens (the cooler will begin to flow through a radiator and the top hose of a radiator will heat up).
  3. Switch off the engine and let's it cool down. Add a cooler in a radiator to the basis of a bulk mouth. On M40 engines unscrew the gate of production of air in the top part of a radiator and add a cooler until it does not begin to pour out through a gate opening. Establish and tighten the gate.
  4. Squeeze the top hose of a radiator to remove air, then if it is necessary, add a cooler again. Close a radiator cover.
  5. Start the engine, warm up it up to the normal working temperature and check whether there are no leakages of a cooler.

Six-cylinder engines


  1. Weaken the gate of production of air in the thermostat case.
  1. Fill in in a radiator 40%/60% mix of antifreeze with water so that it began to pour out in an opening of the gate of production of air. Tighten the gate.
  2. Close a cover of a radiator and start the engine; banish it before opening of the thermostat (the top hose of a radiator will heat up). Slowly weaken the gate of production of air until vials of air cease to leave, then tighten the gate.
  3. Repeat the procedure until air is not removed from system.