How to Put Antifreeze in Car

by Joshua Thomas

There are many different ways to put antifreeze in your car. You can either pour it into the radiator or you can use a funnel to place it in the coolant reservoir. There are pros and cons for each, so you will need to decide which one is best for your circumstances.

The advantage of pouring it into the radiator is that if there's any problem with the system, then you'll see leaks or other signs of problems before they become serious. If you're using a funnel, then it may be harder to notice these things until they get worse- at which point it might be too late.

Steps to Put Antifreeze in Car

Steps to Put Antifreeze in Car
Steps to Put Antifreeze in Car

In the winter, it is important to make sure you have enough antifreeze in your car. The reason for this is because the liquid coolant that a car uses has a freezing point of -34 degrees Fahrenheit. If you do not have enough antifreeze in your car and the temperature goes below 0 degrees Fahrenheit, then your cooling system will freeze up and break down. This can be very costly to fix.

To prevent this from happening, simply add more than 1 qt of antifreeze when filling up with fresh water every time you go to change things over for winter driving season. You should also check all hoses and clamps to ensure they are tight as well as checking belts and pulleys which may need.

  1. Fill the radiator with water and add a small amount of antifreeze
  2. Add coolant to the engine block, just below the heater core
  3.  Check that all hoses are in good condition and replace any that have cracks or leaks
  4. Change your air filter for better airflow around the engine
  5.  Have your mechanic check if there is any sludge buildup in your car's cooling system 6. Keep an eye on your temperature gauge so you know when it's time to add more antifreeze or water to avoid overheating.

Does the car need to be running when adding antifreeze?

It's that time of year where we need to be thinking about winterizing our cars. Let's start with the basics: does the car need to be running when adding antifreeze? There are a few reasons people might want their engine running while they add antifreeze, but it is not necessary.

Antifreeze contains ethylene glycol and this substance can poison pets if ingested, so some people like to keep an eye on what is going into their car and will run the engine during the process. However, most experts say that you should turn your ignition off and allow it to cool before pouring any antifreeze in order to avoid burns from hot surfaces. It also reduces chances of spilling or overfilling.

Can you put straight antifreeze in your car?

It's a common misconception that antifreeze is a fluid designed to keep your car cool in the summer months. In reality, it's only used during cold weather and should never be put in your vehicle when it's hot outside. Antifreeze can cause corrosion on metal parts of your engine which will lead to more costly repairs down the line.

How long after adding coolant can I drive?

It's important to know how long you can drive after adding coolant before your engine will start to overheat. As a general rule, if your car is running hot and you've added coolant but it's not working, wait at least 15 minutes before driving again. If the temperature gauge continues to climb past the halfway point on the gauge, pull over and turn off the vehicle so it doesn't continue to run while overheating. It is also possible that there are other issues that need attention such as low or dirty fluid levels in either water or anti-freeze which would require additional repairs beyond just topping up with more coolant.

  • If you suspect your car needs more coolant, have the vehicle inspected by a certified mechanic
  • Vehicle owners should also check their coolant levels periodically and add as needed, especially during hot weather
  • It is best to drive a car with low coolant levels for no more than 10 minutes at a time before pulling over and adding some more
  • Driving on low-coolant can cause engine failure or other major damage that will cost much more to fix than just topping up the fluids
  • If you're in an emergency situation where it's necessary to continue driving on low-coolant, be sure to pull over every 10 minutes and top off the radiator fluid level until you reach your destination
  •  A good rule of thumb for when not to drive is if there are visible signs of steam coming from under the hood or if there are white exhaust fumes coming out of the tailpipe.

You can drive immediately after adding coolant. In fact, you don't even have to wait for your car to warm up! As soon as the engine starts running again, you should be good to go.

Is it OK to add new coolant without draining the old?

Yes and no. Yes, you can add new coolant without draining the old if it is a type of coolant that is compatible with your current system and yes, you will get the proper amount of fluid in there because this will be measured by your vehicle's computer. However, no, you should not add new coolant to an older car without first removing the old one because any remaining liquid may corrode parts of your engine like metal seals and gaskets. This would then lead to leaks that could cause damage to other components such as belts or hoses.

I wouldn't recommend adding anything. What you should do is check the level of your coolant and if it's low, add more until it reaches the right amount.


Antifreeze is a must-have for any car owner. It helps to protect the engine from corrosion and freezing, but it can be tricky to know how much antifreeze you need--especially if it's your first time using this type of product. Fortunately, there are plenty of ways to determine what size container you'll need as well as step-by-step instructions on how to use that specific type of antifreeze in order to keep yourself out of trouble when filling up. We hope our blog post has been helpful and we're eager for feedback! Share with us your favorite tips and tricks about putting together an emergency kit or perhaps some other best practices for keeping your vehicle safe during winter months below

About Joshua Thomas

Joshua Thomas just simply loves cars and willing to work on them whenever there's chance... sometimes for free.

He started CarCareTotal back in 2017 from the advices of total strangers who witnessed his amazing skills in car repairs here and there.

His goal with this creation is to help car owners better learn how to maintain and repair their cars; as such, the site would cover alot of areas: troubleshooting, product recommendations, tips & tricks.

Joshua received Bachelor of Science in Mechanical Engineering at San Diego State University.

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