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The coolant level in your photos shows low. The appropriate level of the fluid should be where the black plastic and white plastic on the reservoir meet. If you top off make sure you get the right color fluid and wait till the engine has cooled to open the reservoir cap.
The coolant level in your photos shows low. The appropriate level of the fluid should be where the black plastic and white plastic on the reservoir meet. If you top off make sure you get the right color fluid and wait till the engine has cooled to open the reservoir cap.
Thank you for responding.
I wonder why it got low. No leaks under the car. Drives fine. Doesn't over heat.
So when filling up coolant to its max line ( white plastic gone, touching a bit of black plastic ) was say 30C hotter or at 35C than when inspected at 5C, don't be suprise to see equivalent of 120 cc volume change.
"How much coolant loss is normal?
A coolant leak is bound to happen with issues within the radiator or engine, but there are chances of depleted coolant levels with no trace of leakage. A minute amount of Coolant might evaporate as it’s not a closed system entirely due to the availability of an overflow reservoir. However, with time, the Coolant flows within the engine and radiator; the chemical agents, after exposure to high temperature, lose their natural balance and get evaporated without any significant leakage. As the engine gets old, the Coolant evaporates more and more. As a usual calculation, it is found that for every year an engine passes by, the coolant level drops to 0.25% in 4 months provided that the engine is functioning well and with no leakages or damages.
0.25″ inches quarterly makes 1 inch for every year. This evaporation of the Coolant is expected due to extreme temperatures, which turn the water element within the Coolant into steam. Due to this, it is advised to clean the radiator after a couple of years and change the Coolant alongside in order to prolong the engine’s life."
So when filling up coolant to its max line ( white plastic gone, touching a bit of black plastic ) was say 30C hotter or at 35C than when inspected at 5C, don't be suprise to see equivalent of 120 cc volume change.
"How much coolant loss is normal?
A coolant leak is bound to happen with issues within the radiator or engine, but there are chances of depleted coolant levels with no trace of leakage. A minute amount of Coolant might evaporate as it’s not a closed system entirely due to the availability of an overflow reservoir. However, with time, the Coolant flows within the engine and radiator; the chemical agents, after exposure to high temperature, lose their natural balance and get evaporated without any significant leakage. As the engine gets old, the Coolant evaporates more and more. As a usual calculation, it is found that for every year an engine passes by, the coolant level drops to 0.25% in 4 months provided that the engine is functioning well and with no leakages or damages.
0.25″ inches quarterly makes 1 inch for every year. This evaporation of the Coolant is expected due to extreme temperatures, which turn the water element within the Coolant into steam. Due to this, it is advised to clean the radiator after a couple of years and change the Coolant alongside in order to prolong the engine’s life."
Raja, no leak is expected in a closed circuit. When coolant is low, it has leaked out and gone somewhere!
My $70k W212 leaked coolant since the first day... I could smell it my garage along with the standard engine oil leak.
Unfortunately for owners, US Benz are built with standard mystery leaks... easily fixed under $1,000.Ea. 👏
10-25-2022, 07:06 PM
