Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Note: Mercedes-Benz dealships might provide free coolant top off as a courtsy service. You'd better call the service department of your Mercedes-Benz dealship to confirm this before you purchase coolant and top off it by yourself.

Tips

1. After April of 2014, Mercedes-Benz started using the pink-violet MB 325.5 or MB 325.6 coolant specification. If in doubt, call the parts department of your Mercedes-Benz dealshiper for help. MB 325.5 or MB 325.6 coolant can be purchased from a local Mercedes-Benz dealership or online .

2. MB 325.5 and MB 325.6 coolant typically last for 15 years or 150,000 miles before a flush is needed.

3. MB 325.5 and MB 325.6 coolant need to be diluted 1:1 using distilled water. However, it is OK to top off a little MB 325.5 or MB 325.6 into the coolant tank without dilution. If in emergency, you can also top off tap water into the coolant tank and drive to a Mercdes-Benz dealership for help.

References

• Mercedes Check Coolant Level Warning – Checking and Adding Antifreeze Coolant 2015 Mercedes C300

• Mercedes-Benz Coolant Antifreeze Information