How long is sealed coolant good for?

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Got a small 1L bottle of Peak Global 50-50 premix coolant with a production date of July 2010 on it.

As far as I can tell, it's still sealed and never been opened...is it still good, or just get rid of it?
 
Some coolants are good for 10 years inside a working cooling system. Your bottle of coolant should be good to go. Use it with confidence.
 
Honda recommends 12 years or 120k miles for S2000 factory fill coolant.

If coolant is good for 12 years in engine, it should be good for at least that long in a sealed container.
 
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