why is my 2000 chevy s10 leaking antifreeze.?

Mar R

New member
I just put antifreeze in the other day, an hour later it started dripping from bottom of truck. first time this happen, also, heater won't work. I added some water to radiator and heater worked after. truck stops leaking after engine cools down, is this a major problem? heater core? concentrated antifreeze eat through something? please advise.
 
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