On this site I saw that someone recommended simply periodically sucking coolant from the reservoir and refilling it with fresh coolant that was the same as in the system. I have a 2015 that has the original blue coolant,which I assume is the Mercedes 325, and that's what I would add. I would be willing to do this reservoir drain and fill after almost every time I drove it over at least several miles until I went through about a gallon of 50/50 mix. Then, maybe at about 6 month intervals, I would do a reservoir drain and fill with the hope of keeping the coolant from deteriorating. The reason for this unusual approach is to avoid the hastle of disconnecting hoses in hard to reach places and run the risk of damage due to air in the system. The car has 12,000 miles on it and I will continue to drive less than 1500 miles a year.
I would appreciate any comments on whether you think this will keep the coolant in good condition. I searched for the post where I first saw this mentioned but I couldn't find it - maybe someone knows. I am also considering getting the Airlift 550000 system to get rid of the air bubble concern.
I would appreciate any comments on whether you think this will keep the coolant in good condition. I searched for the post where I first saw this mentioned but I couldn't find it - maybe someone knows. I am also considering getting the Airlift 550000 system to get rid of the air bubble concern.