The process of circulating water through the cooling system to remove old coolant along with any dirt or rust. Back flushing means circulating the water from the engine to the radiator (reversing the normal direction of flow) in order to clean the system more efficiently. Also see reverse flush .
FLUSHING THE COOLING SYSTEM
Meaning of FLUSHING THE COOLING SYSTEM in English
English dictionary of automotive terms. Английский словарь автомобильных терминов. 2012