Answers: This type of upkeep is called "Radiator Flush". They can drain the coolant after "flush" through the radiator to "unclog" them and refill it beside fresh coolant. It is good to enjoy it done if you have some overheating problems, A/C stopped well and coolant be dirty. Shop around for the best price and service with some guarantees if anything happen to your radiator. There are shops that specialized in radiator repairs. A lot of times when the shop do service on your saloon, they will say things that may not be important such as new hose (unless explicit detection of deteriorations), or new marine pump. This is how they make money. Do some research and turn from there.
Best of Luck
Don't use it unless near is a known problem beside the cooling system. Just let the system drain fluently and replace the fluid you drain out.
Don't waste your money. Some adjectives sense about radiators here.
if your have problems with overheating your problem most expected is a bad thermostat or ur wet pump is bad but b4 u spend the money for those check the coolant beside a simple tool ur can get at any auto parts store costs lower than $10
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