As working liquid for steering with the hydraulic booster ATF oil is recommended. If the car is operated mainly in areas with a temperature below 0 °C, then as an alternative it is possible to use Pentosin CHF 11 S.

Fig. 2.87. Tanks of the hydraulic booster of steering, brake system and hydraulic actuator of coupling

The recommended liquid level in a tank of the hydraulic booster of steering never has to be higher than a tag the MOVE (maximum), (fig. 2.87), and also has to be always above the lower party of a grid.

It is always recommended to check liquid level at each maintenance. This liquid is not required to be replaced.