Flushing the Radiator for summer. Best mixture to refill with?

[CuZzO99L]

Wayyyyyyy down south here. Garage kept and not daily driven. Can I just run straight water and W.W.??

 

[whobock]

this came straight from the redline website.

"Rust and corrosion protection allows for use of straight water in racing or reduced antifreeze levels in warm climates"

id put at least a gallon of antifreeze in it but thats just my .02

 

[Mondo1]

Best combo IMHO is a 60-40 mix of DISTILLED water and coolant. The coolant lubes the pump and thermo. Otherwise I agree that for racing Straight DISTILLED cools best. I use zero coolant in my heat exchanger. Just the distilled H2O and 3/4 bottle of Water Wetter. Period.