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In this article, we will guide you through the process of topping off the coolant or antifreeze in your Mercedes Benz GLC 300. This tutorial is done on the 2017 model, but the process should be similar for other years as well.
You should top off your coolant at least twice a year. At the start of summer and the start of winter at good times for checking antifreeze in your car. You may also get a dashboard warning on your Mercedes Benz GLC 300 if the coolant level is too low.
Table of Contents
- How to Top Off Your Coolant on a Mercedes Benz GLC 300: Step-by-Step Guide
- Video Tutorial
- Recommended Coolant: Valvoline Multi-Vehicle 50/50 Prediluted Ready-to-Use Antifreeze/Coolant
- Valvoline Multi-Vehicle 50/50 Prediluted Ready-to-Use Antifreeze/Coolant
- What Other Types of Coolant Could I Use?
- PEAK OET Extended Life Violet 50/50 Prediluted Antifreeze/Coolant for European Vehicles
- Prestone Antifreeze Coolant, All Vehicles, 50/50
- How Often Should I Check My Car’s Coolant Level?
- Ensuring Optimal Engine Health: Concluding Tips for Coolant Maintenance in Your Mercedes Benz GLC 300
How to Top Off Your Coolant on a Mercedes Benz GLC 300: Step-by-Step Guide
For a more detailed visual guide, you can watch our video tutorial on how to top off your coolant on a Mercedes Benz GLC 300 SUV.
Video Tutorial
- Pop up your hood: Ensure that your car is completely cool before you start this process to avoid any accidents. The coolant chamber is often under pressure and could scold you if you open it when the engine is still hot.
- Locate the coolant cap: The coolant cap is located on the left-hand side when you’re facing the car from the front. See the video for exact location.
- Check your coolant level: Look for a silver T-shaped marker inside the coolant reservoir (for Mercedes Benz). The pinkish coolant should be above this marker. If it’s not, it means your coolant level is low and needs to be topped off. On your Mercedes Benz, you may also get a dashboard warning if your coolant level is too low.
- Top off your coolant: Open up the cap and add coolant until it covers the silver T-shaped marker.
- Close the cap: Once you’ve topped off the coolant, close the cap back again. Be careful not to over tighten it.
And that’s it! You’ve successfully topped off your coolant.
Recommended Coolant: Valvoline Multi-Vehicle 50/50 Prediluted Ready-to-Use Antifreeze/Coolant
We recommend using a universal 50/50 coolant that works with not just this car, but pretty much any car. It’s also pre-diluted with water so you don’t have to guess the right mixture. You can find a link to purchase this coolant below.
What Other Types of Coolant Could I Use?

For your Mercedes Benz GLC 300, you should check that the coolant that is compatible with your vehicle. Here are some other options to consider:
PEAK OET Extended Life Violet 50/50 Prediluted Antifreeze/Coolant for European Vehicles
This is a violet extended life coolant that is pre-diluted and does not require the addition of water.
Prestone Antifreeze Coolant, All Vehicles, 50/50
This is a universal coolant that offers protection for up to 10 years or 300,000 miles.
It’s important to note that you should always check your owner’s manual to determine the correct type of fluid to add. Also, remember to mix the coolant with distilled water so that you have a combination of 50% coolant and 50% water.
Please ensure that the coolant you choose is compatible with your vehicle to prevent any potential damage. If you’re unsure, it’s always a good idea to consult with a professional or your vehicle’s manufacturer.
How Often Should I Check My Car’s Coolant Level?
The frequency of checking your car’s coolant level can vary, but here are some general guidelines:
Once a month: Most carmakers recommend checking your coolant level at least once a month.
Every three weeks or before a long trip: It’s a good idea to check coolant levels at least every three weeks or before a long trip.
Every six months or every 10,000 miles: As a general rule of thumb, it’s recommended that you check your car’s coolant level every six months or every 10,000 miles, whichever comes first.
Twice a year before summer and winter: You need to check your engine coolant at least twice a year before summer and winter.
Ensuring Optimal Engine Health: Concluding Tips for Coolant Maintenance in Your Mercedes Benz GLC 300
Remember, these are just guidelines, and the advice may vary between car manufacturers. Always follow your car manufacturer’s recommendations for checking and replacing the coolant. If you notice the temperature indicator in your car continuously displays high temperatures, then this could be a warning sign that your car is overheating from a lack of coolant.
Thanks for reading and watching! If you found this guide helpful, please share it with others who might need it.
By Master Influencer Magazine Home Improvement Staff
Published 7:17 PM EDT, Sunday October 29, 2023
Keywords
Top Off Coolant, Mercedes Benz, Universal Antifreeze, DIY, Automotive, Tutorial Video
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