How to add coolant in a Mercedes-Benz C 300 is essential for your mechanic to know. Do not add coolant to your own car instead to get a certified mechanic to do it for you under a cool engine. Coolant is essential for your vehicle because it maintains the proper temperature for your vehicle. Without a proper temperature your engine maybe too cold to start or too hot to run. So the proper amount of coolant Will allow you to drive your car safely. Let me know if you've any questions. Thanks a lot watch, this particular model Mercedes-Benz C 300 is the Mercedes-Benz C 300 2016 . Please Subscribe To My Channel For More Great Content: / @diypinto