Antifreeze Calculator
Calculate the right coolant mixture for freeze protection and determine how much to add.
Cooling System Info
Concentration Settings
Recommended range: 30-70% (50/50 is most common)
Concentration Guide
30% Coolant-15°F freeze protection
50% Coolant-34°F freeze protection
60% Coolant-62°F freeze protection
70% Coolant-84°F freeze protection
Freeze Protection
-58°F
Protected for temperatures down to -20°F
Temperature Protection Range
Freeze Point
-58°F
Boil Point
280°F
Boil point assumes 15 PSI radiator cap
Recommended Action
For -20°F protection, we recommend 30% concentration
Drain from system3.43 quarts
Add concentrate3.43 quarts
Procedure Steps
1Drain 3.43 quarts of current mixture
2Add 3.43 quarts of pure coolant concentrate
3Run engine and check for leaks
4Top off as needed
Estimated Cost
~$12.86
For 0.86 gallon(s) of concentrate