rhagfo wrote:
I run a 60%/40% mix anti-freeze/water, if you look at the charts this mix gives best corrosion, freezing, and overheating protection.
Slight correction - that mix (high in antifreeze) gives the highest boiling point, which is NOT the same as best overheat protection.
Water has much better heat capacity than antifreeze, so if you tow somewhere hot, with mild winters, you want to run MORE water. Race cars run pure water for that reason.
In a street vehicle, that's no good for corrosion or freeze protection. So at minimum, you need 30% antifreeze in the mix. That's what I run in my Z06 - 30% Dexcool + 70% distilled water. In my Detroit Diesel bus, I run 40% plain old diesel antifreeze, and 60% water.
