If your engine’s been running hotter than usual, it’s time to learn how to top up coolant the right way. Not only does it keep your engine from overheating, but it also protects against freezing in cold weather and corrosion year round.
Fortunately, topping it up is simple, quick, and something any driver can do with just a few basic steps.
What Is Coolant and Why It Matters
Before diving in, it’s essential to understand what coolant is. It’s also known as antifreeze. Is a fluid that absorbs heat from your engine and releases it through the radiator. Unlike water alone, it prevents freezing, boiling, and corrosion.
Interestingly, neglecting low coolant levels can lead to costly engine damage. Over time, the fluid naturally evaporates or leaks, which is why routine top ups are crucial.
While your changing coolant, you might aswell also change your oil. Check out some helpful tips on our page!
On that note, let’s break down exactly how to top up safely and correctly.
How to Top Up Coolant Like a Pro
1. Choose the Right Coolant Type
Meanwhile, make sure you use the correct type of antifreeze for your vehicle. Different cars require different formulas, and mixing the wrong ones can damage your cooling system.
Moreover, check the label or your owner’s manual for compatibility. You can usually find premixed coolant that’s ready to pour, or concentrated versions that must be diluted with water.
2. Let the Engine Cool Down Completely
To begin with, always allow the engine to cool before opening the raidiator cap. Opening it while hot can lead to serious burns, as pressurized coolant may spray out.
Once the engine is cool which is usually after 30 minutes (but if your car is very hot and overheating, wait 1-2 hours) you can safely move on.
3. Locate the expansion tank
At this stage, pop your hood and locate the expansion tank. Typically, it’s a translucent plastic tank with “MIN” and “MAX” level markers on the side. If you’re unsure, your owner’s manual will help identify it.
From here, check the level of coolant inside. If it’s below the “MIN” mark, it’s definitely time to top up.
4. Clean the Cap and Opening
Before proceeding, wipe the cap and reservoir opening to remove any dirt or debris. Doing this helps keep contaminants out of your system when you top up.
After that, slowly remove the cap. If there’s any resistance or hissing, wait until it’s completely safe.
5. Add the Coolant Slowly
Now, pour the coolant into the reservoir slowly, watching the level rise. Continue pouring until the fluid reaches the “MAX” line. Be careful not to overfill it, as that can lead to leaks or overflow under pressure.
Additionally, pour steadily to avoid air bubbles forming in the system.
6. Close the Cap and the Hood.
Once the level is just right, close the cap firmly and ensure it’s sealed tight. Then, close the hood and you’re good to go.
Afterward, drive for a few minutes and monitor the temperature gauge. If it stays steady and within range, you’ve done everything right.
Also, check the coolant level again when you finish the drive.
Keep This in Mind After You Top Up Coolant
Even though topping up is easy, it’s important to remember that coolant loss could signal a deeper issue. For instance, a slow leak, bad radiator cap, or damaged hose may be the root cause.
Therefore, if you’re topping up frequently, it’s wise to have your system inspected by a mechanic.
On top of that, always dispose of old coolant responsibly. It’s toxic to pets and harmful to the environment, so never pour it down a drain or on the ground.
Why You Shouldn’t Ignore Coolant Maintenance
At the end of the day, learning how to top up coolant is a simple skill that can save you hundreds, or even thousands, of dollars in engine repairs.
Beyond that, it’s a great way to stay proactive with your vehicle’s maintenance. The more familiar you are with your car’s systems, the more confident you’ll be behind the wheel.
All things considered, next time your coolant runs low, you’ll be ready to top it up quickly, safely, and with total confidence.
Check out more How To‘s on our page!