You don't. I refilled the antifreeze in my 99 Subaru Legacy L 30th, ann. edition last year and haven't needed an ounce since. You probably have a leak that's hard to find. Keep in mind that a warped head gasket can also be a source of anitfreeze or oil leaks internally on an engine. Keep an eye on your oil level, as well as the cleanliness of the oil. If you suspect it's going inside the engine somewhere, I would suggest you bring it to a mechanic.
At the radiator or at the coolant resivoir.
in the tube the dipstick came out of
To change the antifreeze on a Mercedes, locate the drain plug on the bottom of the radiator. Drain the fluid into a pan and refill it.
vehicle will overheat. just dump the oil and antifreeze , flush engine and refill with clean oil
Cracked head or blown headgaskets
Do not run the engine. You need to drain out the fluid antifreeze mixture.You can then refill the power steering fluid.
Drain coolant. Refill with correct water anti freeze mix
Pull your lower radiator hose, replace it when all fluid is out, and refill it.
Not all subaru engines have the bleed screw.Models equipped with the screw is loacted at the top of radiator
I assume you are referring to a fixed leak in the cooling system. In that case, add a solution of 50% antifreeze and 50% water to refill the system.
Not antifreeze, that is special oil for the ac compressor with some dye in it to help trace refrigerant leaks.
Either at the top of the radiator or fill through the coolant recovery tank