Can You Put Antifreeze In The Radiator?

Where To Put Antifreeze In Car


When it comes to maintaining our vehicles, there are many things we need to consider. One of the most important things is the coolant we use in our radiators. Many people wonder if they can use antifreeze instead of coolant. In this article, we will discuss whether or not antifreeze can be used in the radiator.

What is Antifreeze?

Antifreeze is a liquid that is used to lower the freezing point of water. It is usually made up of ethylene glycol or propylene glycol. Antifreeze is commonly used in the winter to prevent the engine from freezing in cold temperatures.

What is Coolant?

Coolant is a liquid that is used to regulate the temperature of the engine. It is usually a mixture of water and antifreeze. The mixture is usually 50/50, but it can vary depending on the type of vehicle and the climate you live in.

Can You Use Antifreeze Instead of Coolant?

The short answer is no. Antifreeze is not designed to be used as a coolant. It does not have the same properties as coolant and will not work properly in your engine. Antifreeze does not have the same ability to regulate the temperature of the engine as coolant does. It also does not have the same lubricating properties as coolant, which can lead to engine damage.

What Happens If You Put Antifreeze in the Radiator?

If you put antifreeze in the radiator instead of coolant, it can cause a number of problems. The first problem is that it will not regulate the temperature of the engine properly. This can lead to overheating, which can cause damage to the engine. Antifreeze can also corrode the metal parts of the engine, which can cause leaks and other issues.

How to Check Your Coolant?

You should check your coolant regularly to make sure that it is at the proper level. To do this, you should open the hood of your car and look for the coolant reservoir. The coolant reservoir is usually a translucent plastic container that is located near the radiator. You should be able to see the level of the coolant through the container. If the coolant is low, you should add more until it reaches the proper level.


In conclusion, you should not put antifreeze in the radiator. It is not designed to be used as a coolant and can cause damage to your engine. Always use the proper coolant for your vehicle and make sure to check it regularly to ensure that it is at the proper level.


The information provided in this article is for educational purposes only and should not be used as a substitute for professional advice. Always consult with a mechanic or other professional before making any changes to your vehicle.