2004.5 dodge ram 3500 coolant flush.

[u/Newtotuning]

Previous owner put some kind green iat or poat coolant inside of it. I know thats not good for the block. So Im going to flush it and replace with valvoline GO5 hoat coolant. Do I drain the radiator and keep filling back up with distilled. Running the truck with heater on then draining it till it runs clear. Then fully drain it then refill with a 50/50 mix?