Quick Coolant Flush mixture question

[Markt213]

Ok thanks Starter986!
I just finished draining and got about 4 1/2 gallons out. With no drain plug it was a challenge to get the hoses off. The coolant was a green/brown color. I used a vacuum system to check for leaks and refilled with distilled water ran it up to temp now I am waiting for it to cool before draining it again changing the water pump, thermostat and belt then refill with 50/50.
So far so good
Cheers!