A mechanic told me that I need to replace my radiator.

A RECHARGE SHOULD NOT CAUSE THIS ISSUE,BUT YES ANYTHING IS POSSIBLE. DO YOU NOT TRUST THIS MECH?IF SO TRY ANOTHER SHOP

1.Drain out your radiator remove it and try to shake out the bolt. 2.How about your water pump. Is that leaking through the peep hole? bolt may have worked its way through the water system and is lodged somewhere? also your thermostat is it leaking there? A clogged one will cause it to run hot. Got to pinpoint where the antifreeze is coming from.