The guy under the car
That's just it, pure water has one of the highest thermal transfer rates available. The things that rate higher aren't really usable in a cooling system.
This is a great point. Anti-freeze is a poor coolant, so run just enough concentration to meet your low temps. Pure, distilled water is great as a coolant, although anti-freeze does have some anti-boilover, anti-corrosion additives so you should run a light concentration just the same.Griffin Radiator, Cut hood vents, make sure your water pump is in good shape. And I'd tone down the anti-freeze mixture. We use 50/50 up here in Canada, down there you would probably be able to run just straight water most the year. I'd suggest 70/30 Water/Antifreeze. That'll help alot with cooling.
In the summer(May to Sept) I run 70/30 mixture, around mid september to later april sometimes like this year, I run 50/50. Huge difference in cooling having proper mixture. you should be replacing your coolant every 6 months anyway.
Or you could just upgrade to the 2 speed Taurus fan....I spent a few weeks chasing down cooling gremlins in my LJ. It wasn't running all that hot, just north of 220* at high speeds. I ended up replacing some parts, and rinsing out my radiator, both on the inside and the outside, and installing a 195* thermostat and a new fan clutch and was able to pretty much cure the issue.
One thing to remember, anytime you've ever driven through muddy water, it dries on the fins of the radiator. If you don't rinse it off pretty quickly, it's extremely stubborn to get off, and interferes with the cooling.
Does anyone have any experience with pusher fans? I'd like to have a fan out infront of my radiator for those times when I'm idling or running at low speeds, like when running trails or wheeling rocks. I would run it on a switch.