Checking Coolant Level

Check the coolant level in the radiator surge tank every time the hood is up. The level should be near appropriate mark when the system is cold. At normal operating temperature the coolant level should increase. Coolant should be added only to the reservoir or surge tank to raise level to the appropriate mark.

If the pressure in the cooling system is too low, or if the coolant does not contain enough ethylene glycol antifreeze, the coolant will boil without the "Temp" indicator light coming on. Pure water could boil at 119°C (247°F) and the "Temp" indicator light would not come on, even with a 103 kPa (15 psi) cooling system. Pure water lacks the necessary rust inhibitors and coolant pump lubricant. The engine should never be run without the pressure cap, or with the cap loose, as the coolant will boil before the "Temp" indicator light comes on.