Everytime I put antifreeze into the radiator the engine shakes and stalls out . on 1998 Buick Park Avenue

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I have changed the intake gaskets and the head gaskets
(2) Answers
Have you pressure tested the cooling system BEFORE trying to start it , to find out where the coolant is going? globalhelper is more than likely correct.....otherwise try green jelly radiator sealant and top-end salve.........
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