June 24, 2022

6 Ways To Tell That Your Vehicle Needs An Antifreeze/Coolant Service

Car repair

6 Ways To Tell That Your Vehicle Needs An Antifreeze/Coolant Service

Getting the coolant service at the right time for your vehicle is extremely crucial in order for it to function properly.

If you are searching for ways to tell that your vehicle needs an antifreeze/coolant service then you are at the right place.

In this blog post, I am going to mention 6 signs by which you can tell if your vehicle needs coolant service or not.

Along with that, you’ll also learn about what exactly is coolant, why it is used, how to know when it goes bad, etc.

So if you are interested to know about these things and keeping your car in top-notch condition then keep on reading.

So without further ado, let’s get into it-

What is coolant, Anyway?

Coolant, also referred to as antifreeze, is a liquid that is composed of a 50/50 mix of water and ethylene or propylene glycol. 

Despite extremely cold temperatures, the fluid does not freeze.

Coolant is actually colorless when it is created, however, dye is added during production to assist buyer selection. Yellow, blue, red, and green, or variations of these colors, are the typical colors of coolant.

The primary work of coolant is to prevent the engine from overheating. To achieve this Coolant/antifreeze is added to a vehicle’s cooling system, the fluid then is circulated by the cooling system’s water pump throughout the engine returning to the radiator while absorbing the heat from the engine. Later the overall temperature of the coolant is lowered as air passes over the radiator fins.

Thus the coolant helps to avoid overheating your car engine.

Moreover, the coolant also helps to prevent the engine components from rusting by circulating throughout the engine.

Signs You Need a Coolant Flush or Coolant Service

Coolant Service

  • The temperature gauge reads hotter than normal when the engine is operating.
  • Antifreeze accumulates and leaks beneath your vehicle
  • Your car is making a grinding sound under the hood.
  • The coolant looks brownish in color
  • There are rust flecks or particles in the coolant
  • Engines emit steam or odors similar to boiling maple syrup.

How often do I need a coolant service on my vehicle?

If you are someone who is having the same question as many i.e, How often should you change the coolant in your car? Then here is your answer – 

This depends on a lot of factors, such as your car’s manufacturer and engine design. Most car dealerships recommend you get coolant service after every 50,000 kilometers; however, this may vary from brand to brand and car models.

When does engine coolant go bad?

Generally, the engine coolant goes bad after every 30,000 kilometers. With the passage of time, the coolant gets contaminated with scaling, rusts and acid build-up

Deteriorated or old coolant may hinder your car’s performance.

As coolant deteriorates, its boiling point lowers, making it less effective at cooling your vehicle. In the event that your coolant’s boiling point drops too low, it will boil inside your cooling system, causing overheating.

Keeping the coolant in good condition requires regular inspection and maintenance.

What is Coolant Flush?

In coolant flush, a professional mechanic would take a look at your cooling system to check if there are any leaks or not.

On finding everything is fine! The mechanic at the auto care shop would then remove all the rust and debris build-up from the coolant by adding a chemical.

Then the old fluid is removed from the cooling system using a machine, and a new fluid (coolant)  is added in its place to ensure that the vehicle performs at an optimal rate all the time.

In simple words, coolant flush basically means flushing the existing old deteriorated fluid and refilling fresh coolant in its place.


A coolant flush will help clean out any debris accumulated over time in your car’s coolant.

Why is coolant service necessary?

Coolant Change

A coolant flush is definitely necessary if you see any of the above-mentioned signs in your vehicle. In such a case, you need to get it serviced at a nearby auto care shop.

Moreover, proper coolant service is required in the following situations:

If your vehicle radiator has been contaminated by rust and debris from your engine. If there is any leakage of coolant from your car If you notice that there is a noxious odor coming from under the hood etc.

What happens if you don’t flush coolant?

If you don’t get your vehicle coolant flushed on time, then you will experience a number of problems, such as overheating of the engine.

Moreover, if you continue driving with a contaminated engine coolant and radiator then it is possible that your vehicle’s engine might seize.

How to flush your car’s system:

Flushing is a process by which the old coolant is replaced with a new coolant.

This process is done for the purpose of clearing out and replacing contaminated coolant with a fresh new one.

A coolant flush can be done by a professional at the local auto care shop.

Moreover, flushing your vehicle’s system is an easy process and does not take too long to complete.


In a nutshell, in this article, I have explained 6 Ways To Tell  That Your Vehicle Needs An Antifreeze/Coolant Service.

Moreover, I have also told you about what coolant is, and the signs by which you can tell if your car’s coolant is good or not.

Discussing the effects of coolant, people usually think of its role in preventing engine components from rusting.

However, a coolant fluid also increases the performance of your car’s engine by preventing it from overheating.

Keeping an eye on the coolant levels helps avoid overheating the car engine and sustaining damage.

I hope this guide has helped clear all the doubts regarding your car’s cooling system.

If you were wondering what coolant is and how often should you replace your car’s coolant, then I hope this article has answered your question.

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