Check the hoses and around the clamps to see if it is possibly leaking from there. Radiator sealer works fine on small leaks.If all else looks good you are on the way to have your rad repaired.(also check around the water pump,when they go they leak bad!!) if the sealant doesn't work and you can see where the leak is coming from, then remove the radiator, if necessary, drain it. you then need to clean the area where the leak is with a wire brush and alcohol. then get a small plumbers torch and some resin core solder and seal the leak. if that doesn't work you may have to have it recored or buy another one.
Call Around; Find A Radiator Shop or A Mechanic That Can Pressure Test Your Radiator. This Should Help
then you should have your radiator flushed because you have rust in it. FYI: antifreeze can strip the paint off of your it you spill it. Also, you may need to replace your radiator if the antifreeze is leaking, it may be through a rusted/corroded portion of the radiator.
No. All antifreeze types are not priced on quality but brand name. This should not have any bearing on your radiator leaking.
You don't put water in your radiator, you put antifreeze.
Should be a plug at the bottom or rear of the radiator
there is an antifreeze overflow tank, look on the radiator next to the radiator cap and there should be a smallish hose, follow it and you will find the tank.
You should always use a 50/50 mix of antifreeze and water.
Whenever it needs it.
if you have an automatic transmission there should be cooling lines going to the radiator to cool the transmission fluid the lines could be leaking or the tank could be leaking
It is no longer necessary to add just water to a radiator in newer cars like the 2005 Malibu. An antifreeze that is half water and half antifreeze is usually best. Add the 50/50 antifreeze to the radiator overflow tank. It should be a plastic, see through tank hooked to the radiator.
A bad radiator is a radiator that is leaking or clogged. If you are loosing coolant then you have a leak that should be easy to find if the leak is at the radiator. If it is clogged your engine will overheat.
Use a 50/50 mix of antifreeze and water and fill SLOWLY to prevent an airlock through the top of the radiator