Antifreeze change

Hello. I will empty the old antifreeze in my car and fill it with new antifreeze after cleaning it, but before that, there is something I wondered about. Is it okay if I mix 3 liters of antifreeze and 3 liters of pure water in a separate bottle in half and add it to the car? I asked a few masters and they said it would be okay. Let me get some ideas here. Who is doing how?

There is no harm in mixing, on the contrary, make the mixture with pure water as it should be, which is important here. And also, this job is not like an oil change, air should be taken from the thermostat or the valve on the heater hose.

If the antifreeze you use is concentrated, it is the most correct ratio to mix it at 50%.