I have a really small leak that I cannot find. it seems to be coming from all over. It takes about a week to drain the radiator. Im thinking maybe its the big "O" ring on one of the side tanks. Do I need to replace the entire radiator or would one of those "Stop Leak" bottles take care of it. Anyone else have this same issue and what was your fix?

 

Would not do stop leak and could clog heater core then you have more problems. Possibly a radiator shop could fix it, they will pressure up and check for leaks and repair as needed or scrap it. If its original I'd replace it. A quick internet search came up with $84 - $297. Call around and also replace with new hoses while the system is drained.