What is the best kind of stop leak for radiator?
Assuming you are referring to a car radiator, there are of course a variety of manufactures that make a “stop leak” out there and depending on how bad the leak is ultimately I would advise taking it to a qualified mechanic (if finances permit) and have the leak fixed professionally. Alot of these things on the market to stop a radiator leak are only temporary at best. They weren’t meant to be a permanent fix. Reason being, the radiator builds up alot of heat to the point that any kind of putty type stuff or even one that you put directly in the radiator that is suppose to plug up the leak from the inside will eventually give out due to the amount heat. Basic science: Heat expands things. Maybe not the you were looking for, but hope it helps.
