Radiator stop leak
2 Answers
Radiator "stop-leak" is almost never a good idea.
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When your radiator leaks, replace it or bring it to a shop to be rebuilt, they are easy enough to pull out and reinstall. Now you will have to flush the entire system several times to get everything out. Also, remove the heater hoses and thoroughly flush clean water through the heater core. I'd flush the engine also for several minutes. As someone suggested, change the thermostat and sensors. And do not use plain water in the new radiator, use a 50/50 mixture - or you will overheat again.
