Coolant Mixture Calculator
ETHYLENE GLYCOLCoolant/Antifreeze mixture calculator — automatically calculates the recommended ratio based on your local winter minimum temperature and coolant type.
Coolant Type
COOLANT TYPE
Minimum Winter Temp
MINIMUM WINTER TEMP
-10°
°C
-50°C10°C
Recommended Ratio
Ethylene Glycol + Distilled Water
Risk
100%
Antifreeze
Water
Antifreeze Concentration
100%
Achievable Freeze Point
-12°C
Margin 2°C
Boiling Point
197°C
Standard atmosphere
Antifreeze100%
Distilled Water0%
Mix Ratio (Antifreeze:Water)Infinity:1
Safety Margin2°C
Above 70% concentration, freeze point rises and cooling efficiency drops.
⚠ Insufficient margin (2°C) — may freeze in cold weather. Remix per the recommended ratio.
Coolant Guide
COOLANT GUIDE
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Freeze Point vs Concentration
Ethylene glycol 50%~60% gives optimal freeze protection. Above 70%, the freeze point rises.
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Must Use Distilled Water
Minerals in tap water create scale, blocking the radiator and heater core.
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Replacement Interval
Standard coolant: 2 years / 40,000 km. Long-life (OAT): up to 5 years / 100,000 km.
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Corrosion Protection
Antifreeze not only prevents freezing but also contains rust inhibitors, corrosion protection, and water pump lubricants.
Need Coolant/Antifreeze?
Ethylene Glycol · Propylene Glycol · OAT Long-Life · Concentrate/Premix