Coolant Mixture Calculator
Calculate the exact amount of coolant concentrate and water for your vehicle.
Waiting for data
Enter your data above to instantly see your analysis result.
Coolant Mixture Calculator
The Coolant Mixture Calculator is a professional tool for car services, mechanics, and automotive enthusiasts. It allows you to precisely determine how much concentrate and water you need to prepare the correct coolant mixture. The right antifreeze ratio is key to protecting your engine from freezing, overheating, and corrosion.
How to use the Coolant Mixture Calculator
- System capacity: Enter the total cooling system volume of your vehicle (found in your owner’s manual).
- Protection level: Select the desired freezing point. Standard protection is usually -37°C / -34°F (50/50 mix).
- Result: The tool will instantly calculate the required amount of Concentrate and Water.
Using the correct coolant concentrate ensures optimal heat dissipation and prevents premature wear of the water pump, radiator, and engine seals.
live_help Frequently Asked Questions (FAQ)
What is the ideal coolant to water ratio?
For most climates, a 50/50 ratio (50% concentrate and 50% distilled water) is ideal. It provides freezing protection down to -37°C (-35°F) and effectively raises the boiling point while maintaining excellent heat transfer properties.
Can I use 100% coolant concentrate?
No. Pure coolant concentrate actually has a higher freezing point than a mix with water (around -12°C) and much poorer heat transfer properties. It must always be diluted to work effectively.
Why should I use distilled water instead of tap water?
Tap water contains minerals like calcium and magnesium that can create scale deposits inside the radiator and engine block, reducing cooling efficiency and leading to clogs. Distilled water prevents these mineral deposits.
How often should I change my coolant?
Typically, coolant should be replaced every 2 to 5 years, depending on the type (IAT vs. OAT/HOAT) and vehicle manufacturer recommendations. Over time, anti-corrosion additives break down, leaving the engine vulnerable to internal rusting.