REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz C-Class (W203, 2000 issue)

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Mercedes-Benz
	W203
		Introduction
		Instruction Manual
		Routine maintenance
		Engine
		Cooling and heating
			Cooling system
				Antifreeze - a means of protection against freezing
				Changing the coolant - general comments
				Removal and replacement of hoses of the cooling system
				Removing and installing thermostat
				Check thermostat
				Check the cooling system pressure
				Removing and installing coolant pump
				Removal and installation of the fan
				Removing and installing radiator
			Ventilation systems, heating and air conditioning
		The power supply system and release
		Electric motor
		Manual gearbox
		Automatic Transmission
		Coupling and power shafts
		Brakes
		Suspension and steering
		Body
		Onboard electric

printable version

Antifreeze - a means of protection against freezing

Coolant

The cooling system is filled year-round with a mixture of water, antifreeze and anti-corrosion agents. This prevents rust and corrosion, deposition of salts and, moreover, raises the boiling point of the coolant. In the cooling system due to expansion upon heating fluid is pressurized, which also leads to an increase in the boiling temperature of the coolant. Pressure is limited by a cover disposed in the surge tank valve which opens at a pressure 1.4 - 2.0 atm. To ensure that the cooling system is required to insure against boiling coolant in which the vapor lock may result, causing the circulation of the liquid is reduced and engine cooling worsens. The boiling point should be increased. To this end, the cooling system should always be filled with a mixture of water and these supplements thereto.

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Changing the coolant - general comments