Hum! I know that General Motors car selling stores have in their mechnical goods some pills you can try in there but I would not dare put more than one as it is also used to fix the engine when a gasket is worn-out!... You can risk it buying a used radiator... But I think the best thing would be to buy a new one. Find a way to find money more than find a weak solution or you mighty end out having a gasket jump and have your engine blow out... That would ruin your car as a whole and end up buying a new car!

Old Timer