A raw egg in to the tank.
A good stop leak product for a radiator is the Bar's line of stop leak. It comes in an easy to pour bottle which seeks out leaks and seals them in minutes.
Read the directions on the container of stop leak. There are many stop leak products out there. Keep in mind that this is a temperary fix at best. I suggest that you do not. It causes more harm than good.
change th radiator
stop leak
Barr's Stop Leak is a brand of radiator repair chemicals. Barr's Stop Leak is poured in the radiator and the engine is run at an idle for a few minutes. It will repair small leaks like those that happen if a rock strikes the radiator.
How you repair a radiator depends on what is wrong with it. A small leak may be able to be fixed by adding a stop-leak product, available at most discount stores and auto repair retailers. Depending on the problem, the radiator may have to be pulled from the vehicle for inspection. Minor damaged can perhaps be fixed with a stop-leak product or a small spot weld if the radiator is copper or brass. Aluminum radiators (newer models) can sometimes be repaired with epoxy.
You dont. -Mechanic
Ground Black Pepper will, in deed, stop a small radiator leak. I've done it many times. I've NOT experienced any bad effects from doing this. If (when) leaks persist, it is time for a new radiator.
IF THE LEAK IS FROM THE RADIATOR, THERE IS NO FIX EXCEPT TRY THE RADIATOR STOP LEAK CANS OF FIX....IF THAT DON'T WORK, GET A NEW RADIATOR. THAT'S ALL YOU CAN DO!!!!!!!!!!!
Yes. Suggest using "Bars Leak" Anything else may plug up your radiator. Yes, but recognize that stop-leak in any form will only stop the problem temporarily. As the radiator heats and cools it also expands and contracts. Sooner or later, the stop-leak will fail. And it will probably be sooner than later.
Yes, a radiator leak can cause the coolant levels to drop, leading to overheating. The radiator is responsible for cooling the engine, so a leak can disrupt the cooling process and result in the engine overheating.
The only way that actually works is to change the radiator. "Radiator Stop Leak" products don't really stop anything, except maybe you being able to spend that $5 on a Big Mac or something.