REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Hyundai Sonata (2001 release)

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Hyundai
	Sonata
		General Information
		Engine
			Engines DOHC 2,0 and 2,4 l
			Engines V6 2,7 liter
			Lubrication system
			Cooling system
				Overview
				Coolant
				Check specific gravity of the coolant
				Checking the tightness of the cooling system
				Radiator cap
				Tubes and pipes of the cooling system
				Coolant temperature
				The water pump of engines DOHC
				The water pump V6 engines
				Radiator
				Engine radiator fan
				Thermostat
			Ignition system
			Power system
			Emission of exhaust gases
		Transmission
		Steering
		Chassis
		Brakes
		Body
		Additional security
		Systems of heating, ventilation and air conditioning, air-
		Electrical
		Diagrams

printable version

Check specific gravity of the coolant

Measure specific gravity hydrometer coolant.

Measure the temperature of the coolant and determine the concentration of ethylene glycol from the relationship between specific gravity and temperature (tab. 2.10).

For example, the safe operating temperature of -15 ?� C, if the measured specific gravity of 1.058 g / ^cm 3 at a coolant temperature of 20 ?� C.

Table 2.10

The ratio between the concentration and the specific gravity of ethylene glycol coolant

A WARNING

If the concentration of glycol in the cooling fluid is less than 30%, its corrosion resistance to deteriorate considerably. If the concentration of more than 60%, the properties deteriorate and ethylene glycol coolant, which will adversely affect engine operation. Therefore, make sure that the level of concentration is within acceptable limits. Do not mix fluids of different brands.

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Checking the tightness of the cooling system