Cooling system for a motor vehicle drive

The system has two coolant circuits connected to a fluid tank. This is formed by a common expansion tank (36). A ventilation pipe (50,52) branches off each circuit, and opens into an upper section of the expansion tank. The circuits are arranged so that the flow volume in the motor cooling circuit (10) is larger by a multiple than the flow volume through the charging air cooling circuit (12). At least one of the ventilation pipes contains elements (54,56) to limit the flow volume between coolant circuits and expansion tank.