So here's where I am at. Already drained the radiator (flushed and ran through with distilled water about 3 times) and the water is virtually clear. While cold, I added the Zerex G05 coolant to the reservoir and only allowed 2 quarts to get the MAX COLD line. I am aware that there is still a good bit of "water" left in the block, so I am trying to get the mixture accurate. I let the car start and get to normal operating temp with the heater on and of course it hit that mark quick. Don't want to have the car blow up on me later down the line so I am assuming just let it cool and add a 50/50 mix of the coolant with water?