Coolant Ratio?

I am currently running a 50/50 mixture. My car runs pretty hot in the summer in Florida. Even more so in heavy stop-and-go traffic. My temp gauge has gotten as high as 240 degrees. It is starting to make me nervous now that summer is about here. Is there any downside to running 100% coolant other than cost? I tried adding Purple Ice...didn't do ****.

Thanks
Randy
 
The more Water you run the cooler it will be! Like mentioned above. I usually run a 70/30 mix. Dont leave it in there during the winter, because I did and it began to slush up at about 0 degrees. Also be cautious that the less coolant you run the more corrosion can build up, so just dont run straight water for more than a few months. You sould notice a huge decrease in temps with straight water though
 
If you are regularly seeing temps in the 220 degree range, perhaps you need to troubleshoot your cooling system as adjusting coolant mix may net be enough.

What's your engine combo? What's the state of the cooling components?
 
If you are regularly seeing temps in the 220 degree range, perhaps you need to troubleshoot your cooling system as adjusting coolant mix may net be enough.

What's your engine combo? What's the state of the cooling components?

+1

In Florida, a 75% water to 25% coolant mixture is recommend. I know you live in PA, but you can give it a shot.

Personally, I think some part of your cooling system is starting to fall you.
 
I live in FL just havent updated my profile. I just installed a new water pump and it didnt do anything. I got a 180 degree thermostat that seems to be working good. I got a 2,800 cfm Flex-a-lite electric fan on an adjustable thermal control. The car has always run hot for years. Only thing I can think of is maybe a bigger fan.
 
347 stroker. Ford Racing dual row radiator. Autometer ES series mechanical water temp gauge. As long as I am cruising it stays around 190. Soon as I start hitting red lights it starts creeping up. If I am in heavy traffic or sit at a lot of red lights it will go well over 210 sometimes higher.
 
flexalite electric

I don't know which flexalite electric fan you have but if you have the cheaper black magic fan with no shroud then that would be the problem. I have the black magic extreme #185 fan with shroud and the temp gauge stays right on 198 degrees here in the virginia sweltering traffic and the fan motor only draws 18 amps.