How to inspect radiator coolant hoses?

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How can we tell when a radiator coolant hose needs to be replaced proactively if it isn
How can we tell when a radiator coolant hose needs to be replaced proactively if it isn't leaking? Do they have an estimated lifespan for proactive replacement? The few service records which came with my 200k mi 2000 V70 said to replace the upper radiator