Radiator Restrictions
A dirty, obstructed, or leaking radiator core causes overheating. Scale deposits result from using hard (high-mineral) water in the cooling system. Heating these minerals causes the formation of a hard coating on the surfaces within the radiator. Scaling reduces the transfer of heat. Some hard water produces a silt-like deposit that restricts the flow of water. A radiator that is partially restricted should be removed and cleaned by a radiator repair specialist. Replace a radiator core that is plugged or has a heavy scale.
Flushing Procedure
There are different methods to flush the cooling system. Back flushing is recommended. Special equipment is available. Follow the equipment manufacturer's instructions for use.
Important:
• Remove the coolant thermostat before flushing the cooling system.
Refer to
Engine Coolant Thermostat Replacement
. • Dispose of the used engine coolant properly. - Store the used engine coolant in a used coolant holding tank,
while awaiting approved disposal methods. - Do not pour used engine coolant down the drain.
• • Dex-Cool® antifreeze is a very toxic chemical.
• • Disposal into a sewer system or contaminating the ground water
is both environmentally irresponsible and illegal.
