Freeze Protection

Percent Antifreeze/Distilled Water	Freeze Protection
50/50	-34.5°F (-37°C)
40/60 to 60/40 Acceptable range	-12.8°F (-24.9°C) to -53.6°F (-47.6°C)
60/40 For extremely cold climates	-57.9°F (-50°C)