Is higher coolant concentration always better?

No. The recommended concentration is typically 50%. Too high reduces cooling efficiency. Pure coolant has a higher freeze point than a mixture.

Coolant Mixture Calculator

ETHYLENE GLYCOL

Coolant/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

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