So I bought a Superbird about two months back and it was overheating a little so It turned out the radiator had a small leak and when I drained it to inspect it had gunk clogging it up. I sent it out to get a new cooler 4 row core and should be ready for pick up in the next hour or two.

I also researched and found a lot of reccimendations to use the following:
“50/50 mix of water/antifreeze,....again I'll recommend the Zerex G-05 brand antifreeze (just 1 gal. the rest water, should be close to 50/50) with 8-10 oz. of Redline Water Wetter added,(Autozone).”

Would that be the best to use? If so then for the water mix would it be regular water or would it have to be distilled?