Is Radiator Coolant and Antifreeze the Same Thing? What’s the Difference?

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Written By Nicklaus Frost

Last Updated on: 3rd July 2022, 05:45 pm

After scrolling down Google’s top search results, we have found this question ‘Is radiator coolant and antifreeze the same thing?’ as the top trending deal. Well, the radiator coolant and antifreeze are similar to work! What do I mean? Antifreeze is a glycol-based liquid that must be used after blending with water as a diluting fluid. On the other hand, you get radiator coolant as a ready-to-use solution.

Is radiator coolant the same as antifreeze?

Antifreeze contains ethylene glycol and is used in a car’s cooling system so that you feel no trouble even when driving through the most extreme, harsh, and sub-zero weather. The antifreeze contains Ethylene glycol that lowers the freezing temperature of the cooling liquid in your radiator.

Also, Radiator coolant bids fair to be a mixture of antifreeze and water. The mixing ratio of antifreeze and water in radiator coolant is kept between 60:40 and 50:50. The antifreeze works as a coolant liquid when the water combats temperatures of exquisite heat in your car’s cooling system.

Radiator Coolant Antifreeze
Radiator coolant is itself the antifreeze coolant Antifreeze is a glycol-based liquid
It helps cool your car engine It prevents the radiator in cars from overheating
Minimizes engine heat and allow your car engine to last longer Improves the proper functioning of heat exchangers
Prevents engine block and cold temperatures Ethylene glycol antifreeze is compatible with heating systems
Filters round the engine and ensure the liquid is not freeze Stops catastrophic failure of the engine


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Is it necessary to flush coolant

Is it necessary to flush coolant?

Flushing coolant is required to provide some benefits to the cooling system. Like every other automobile parts, it is necessary to maintain your cooling system, and flushing once a year can be the big deal to make coolant working effectively.

By the time the coolant system gets rust and scale deposits in it. A coolant flush removes these deposits and prevent overheating and damage to the system. When we use a new coolant in a vehicle, it lubricates the automobile’s water pump that extends your water pump’s life.

After flushing, the new antifreeze works excellent in the cooling system and operates more efficiently. After research, we got the old coolant loses its anti-corrosive properties. Then, the contaminants build up in the cooling system. Do people often search what the easiest way to remove particles from the cooling system is? It is a coolant flush that thoroughly cleans the system. It’s never wise to let the old antifreeze becoming acidic.

During a coolant flush, you naturally check the thermostat, radiator, and all hoses and belts. Through this, you can check for leaks and additional problems.

Benefits of changing coolant

  • It replaces ‘Acidic Antifreeze’

Outdated coolant or antifreeze turns acidic if not changed in a minimum duration. It becomes clumpy. The prime benefit of changing coolant is getting rid of acidic antifreeze. Replacing the old stuff with new coolant will prevent all expensive problems shortly.

  • It does eliminate harmful contaminants

We use antifreeze or coolant to the cooling system to keep the radiator and the engine cool. Besides, the coolant protects the engine’s parts from corrosion. You get top-grade coolants with anti-corrosive properties that ensure pure engine lubrication. If the coolant is not changed even after a long duration, it loses appeal to anti-corrosive protection. It would help if you changed the old coolant to keep the harmful contaminants at bay.

  • Get increased in ‘Lifespan’

You must be changing it with a new coolant, aren’t you? Surprisingly, the new coolant contains high addictives to do proper lubrication in the water pump. Sometimes, you may be benefited not replacing the water pump thoroughly, which can be quite costly. A cooling system service has its long life if maintained properly with new coolant.

  • Known as top-scheduled maintenance

Changing coolant is one of the often-scheduled maintenance tasks. It should be done to ensure optimal performance. However, we recommend flushing coolant at intervals of 40,000 miles. You can check the owner’s manual for more surety. Adhering to the vehicle’s maintenance keeps your running fast!

  • Prevents rusting

A new coolant prevents rust and foam and keeps the engine running extensively. As we all know, rust is a big problem to decrease an engine’s functionality and cost you thousands! Why take risks? As with many things, be mindful of preventing rust of necessary machinery by changing coolant.


  • How Much Coolant Does my car Need when empty?

You must have understood the difference between radiator coolant and antifreeze; they’re quite like the same thing. A maximum number of cooling systems holds 5 liters of coolant. Most sellers sell coolant in 1–20 liter containers. You must purchase the exact amount of coolant when replacing engine coolant.

  • What is the difference between engine coolant and radiator coolant?

Well, this is where you may be getting confused! I didn’t mean it to a professional anyway. If I specify the difference between engine coolant and radiator coolant, then there’s no difference at all. Engine coolant or antifreeze keeps the radiator protected from freezing in extreme cold. Besides, the engine doesn’t get overheated even in extreme heat.

  • Which coolant for my car?

At first, you must know about OAT! The full form of OAT is Organic Acid Technology. What is your car made between? After 1998 or before 1998? If your car is launched before 1998, there is a high chance your car needs a coolant that isn’t OAT-based but contains silicate. We recommend Zerex Ready-to-Use coolant in case.

Besides, those cars made after 1998 mostly need OAT-based coolant. We recommend Zerex G05 Phosphate Free OAT Coolant as the top-reviewed product on Amazon. Get your deal done!


Now, you better know, is radiator coolant the same as antifreeze? It’s similar! The difference is coolant comes with ready-to-use formula, and the antifreeze needs to get blended with water in a 50:50 ratio. Let us know if it was helpful. Thanks for being with us for a long!

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