Coolant Mixture

[XtremeGST]

Cars running alittle hot 15 degrees F more than what i want it at, I am going to do a coolant flush and add some water wetter, was wondering what type of coolant you use and what mixture % is best, summer is coming and right now its not going below 40 degrees F, i was thinking a 60% water 40% Glycol mixture. What are your thoughts about a mixture and what brand do you suggest for coolant/antifreeze.

 

[Defiant]

60/40 should be fine for that area. Replace your thermostat with a stock factory unit while you're at it. If your radiator's stock, be prepared for it to fail. The plastic tanks die.
During summer, 30% antifreeze is best, as nothing carries off heat as well as water. Well, other than sodium, but it's a nuisance to run in a cooling system what with the bursting into flames and all.