CharlyE500

Hello guys,

My S450 pop up some message to add coolant. Which coolant do you guys recommend ?
There are 2 coolant reservoir. One for engine/radiator and one for turbos. Can I use the same coolant ?

Thanks.

vincheung

Same coolant for both, I use the MB branded coolant which requires it to be mixed 50/50 with water. Other brands like Zerex and Peak are perfectly fine to use also just check the labels for "Mercedes." The center reservoir doesn't give off messages when low I believe, so it may be the main res thats reading low. I've removed my engine cover and never put it back on to make my periodic fluid checks easier.

Tom in Austin

When my system needed a few ounces, I just added distilled water.