Ford Focus>> Cooling system>> Replacement of cooling liquid
Ford orders complete replacement of cooling liquid after ten years or after 240 000 km of run. This rule is valid only concerning firm WSS-M97B44-D liquid (Motorcraft Super Plus 2000).
Replacement carry out as follows:
- dump pressure in cooling system, having opened a cover of a broad tank. Better it do on the cold engine not to be scalded;
- put under a radiator reception capacity and remove the bottom hose of a radiator or unscrew a drain stopper on the bottom tank of a radiator;
- in order that cooling liquid followed quicker, uncover a broad tank. Merge liquid and cover reception capacity;
- establish the bottom hose (more preferable to use a new collar). Tighten a drain stopper;
- fill a broad tank with cooling liquid recommended to Ford;
- start up the engine and let's to it work on average turns before thermostat opening. Check level of cooling liquid in a tank and if necessary add. Liquid level in a tank at working temperature of the engine should remain constant;
- close a tank a cover and make the trial trip, the air which was thus in system of cooling should leave;
- after a trial trip open a stopper of a broad tank and let's work to the engine on average turns before turning on of the fan;
- if it is required, add cooling liquid to the top mark;
- close a cover of a broad tank.

Fig. 172. Check of concentration of a mix of cooling liquid with areometer use

The cooling liquid consisting of a mix of antifreeze and water in the ratio of 50 % of each component, provides normal operation of the car to air temperature–30 ° S.Esli in operation you added in a tank water, this concentration will be already insufficiently to maintain the car at lower temperatures. Check concentration of a mix by means of the areometer. By experience, addition about 3/4 liters of a concentrate of antifreeze increase frost resistance on 10 ° About (fig. 172) .

Do not mix the original cooling liquid offered by Ford, to other products as they can appear are not compatible on various properties that can lead to corrosion of metal and further to major maintenance. Better completely replace cooling liquid.

Volume and concentration of filled-in cooling liquid in the Ford engine
Volume of water, l
Volume of a concentrate of antifreeze, l
Total amount of cooling liquid, l
1,4 l of Zetec-SE
1,6 l of Zetec-SE
1,8 l of Zetec-E
2,0 l of Zetec-E
1,8 l of Endura
1,8 l of Endura-DI

Add cooling liquid in the following order:
- first of all выравните pressure in cooling system, having opened a tank cover, it is better to do it on the cooled engine not to be scalded;
- put pure reception capacity under a radiator and remove a collar of the bottom hose or unscrew a drain stopper of a radiator. Remove a hose from the union;
- that liquid followed better, before uncover a broad tank. Merge about 1 — 2 l of cooling liquid, cover reception capacity;
- establish a hose. Tighten a drain stopper;
- add in a tank necessary quantity of a concentrate of antifreeze. Missing quantity add from reception capacity, close a tank cover.
If during a trip from your engine cooling liquid flowed out a lot of, at all do not add it to demanded level, filling in in a tank cold water. At the hot engine the block of cylinders in this case can receive a crack or lead a head of blocks. Therefore at first let's to the engine cool down and only a field of it add water.
The service centers apply the special delivery pumps creating in system of cooling pressure to 120 kPas to check of tightness of system of cooling.