Yes, you can add antifreeze / coolant to a car without flushing the radiator. It's best to use the same type that's already in your car / truck - conventional or long-life.
Antifreeze / Coolant comes in 'Full Strength' which needs to be mixed with distilled water (usually 50/50 for mild weather regions, and more antifreeze 70/30 for really cold weather regions.) Also available is pre-mixed 50/50 antifreeze. PEAK Antifreeze & Coolant protects from -84 degrees to 276 degrees Fahrenheit when mixed 70/30.
If it's been 2-3 years since a flush & fill for conventional antifreeze / radiator fluid, or 5 years for 'long life' antifreeze, it's likely time for a flush & fill.
It doesn't have one per se. The antifreeze overflow serves as the car's radiator cap. If you need to add antifreeze, add it there.
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.
For the most part, only old cars (pre 1970s.....) require adding coolant directly to the radiator. Newer vehicles have a "reservoir tank" that can be accessed anytime. If the reservoir is below the Full line (or nearing or below the Low line....) - you can add proper antifreeze/coolant (check your owner's manual) directly to this reservoir tank.I've included the eHow article which outlines this process too....not to be confused, some owner's manuals MAY require "radiator flushing" - this is the only exception when you would add antifreeze/coolant to the "radiator" itself....and only when the vehicle has not been driven.
yes you can?
Remove the radiator cap when the engine is cool and add the coolant into the radiator or you can add to the coolant overflow bottle. DON'T remove the radiator cap when the engine is hot!!!
The radiator overfill tank is the only spot to fill the radiator. There is no fill cap on the radiator itself.
To the overflow tank and if the radiator has a cap,you will need to fill it with the engine cold.
Whenever it needs it.
When the engine is cold you can add to either the radiator or the coolant recovery bottle.
You add to both the radiator cap and the overflow bottle.
Umm, you pour it into the radiator. You know, the place that you drained it from.....
The bottle on the firewall with the radiator cap on it is where you add coolant.