Find where it is running out and repair the cause.
Same color as what?
Pour water/antifreeze at ratio 60/40 into radiator
Umm, you pour it into the radiator. You know, the place that you drained it from.....
There's a leak somewhere in your coolant system. Check the radiator and the hoses.
There might be a leak in the water pump, or in the radiator. Maybe even check the radiator hoses for cracks and leaks.
First You Would find the drain plug on the left or right of the bottom of the radiator,locate the plug screw the plug out let the fluid drain put the plug back,go to a local parts store get 1 gal. of antifreeze pour that in first, then fill the rest of the radiator with water/check for leaks,no leaks your set for life.
In the top of the radiator or through the coolant recovery tank
depends on the type of vehicle
You would pour it in the radiator. Caution, stop leaks usually clogs heater cores.
To change the antifreeze on a 2003 Alero once the car cools remove that radiator pressure cap. Pour in a gallon of pre mixed coolant.
Enough to create a 50/50 mix of anti-freeze and water. This usually requires a gallon of antifreeze. You can purchase the 50/50 mix, ready to use. Pour it in the radiator.
You can do it either way. If you add it to the radiator, make sure you open it carefully when it is hot to prevent burns.