What Is Car Coolant Fluid

A coolant (also called an antifreeze) is a special fluid that runs through your engine to keep it within its correct operating temperature range. It is made from either ethylene glycol or propylene, water, some protection additives and is usually green, blue or even pink in colour.

Can I just add coolant to my car?

Loosen the reservoir cap just a little, then step back while the pressure releases. Then, remove the cap completely. If the coolant level is low, add the correct coolant to the reservoir (not the radiator itself). You can use diluted coolant by itself, or a 50/50 mixture of concentrated coolant and distilled water.

Can I just add water to my coolant?

Only Use Water In The Radiator In An Emergency While it’s ideal to add a 50/50 mix of coolant and water (or a pre-mixed coolant), if you absolutely have to keep driving, you can add water to the radiator to get you to your destination. … Let the engine cool down before you remove the coolant reservoir cap.