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Adding coolant concentrate (Mercedes Benz)
A warning  Since some parts of the cooling system made of aluminum, it is necessary to use for this purpose only suitable and permitted for use by Mercedes-Benz antifreeze, anti-corrosion agent.
Example: measurement of protection a 4-cylinder engine from freezing (no air conditioning) with a hydrometer guarantee this protection to a temperature of -20 ?� C. In this case, drain the cooling system 1,3 l cooling liquid and then add 1.3 liters of pure concentrate of antifreeze . This ensures protection of the engine from freezing to a temperature of -37 ?� C. If the engine should be guaranteed protection from freezing to -45 ?� C, replace 1.7 liters of fluid.
| The measured value, ?� C | 0 | -10 | -20 | -thirty | | Quantifying the difference, l | Gasoline engines | | 4-cylinder. -37 ?� / without air conditioner. -45 ?� | 4.0 / 4.4 | 2.4 / 2.8 | 1.3 / 1.7 | 0.5 / 0.9 | | 4-cylinder. -37 ?� / with the air conditioner. -45 ?� | 4.5 / 5.0 | 2.7 / 3.2 | 1.4 / 1.9 | 0.5 / 1.0 | | 6-cylinder. -37 ?� / -45 ?� | 5.0 / 5.5 | 3.0 / 3.5 | 1.6 / 2.1 | 0.6 / 1.1 | Diesel engines | | Engine 2,0l -37 ?� / -45 ?� | 4.0 / 4.4 | 2.4 / 2.8 | 1.3 / 1.7 | 0.5 / 0.9 | | 2.0l -37 ?� / -45 ?� to the air conditioner. | 4.5 / 5.0 | 2.7 / 3.2 | 1.4 / 1.9 | 0.5 / 1.0 | | Engine 2.2-liter -37 ?� / -45 ?� | 3.5 / 3.9 | 2.1 / 2.5 | 1.1 / 1.5 | 0.5 / 0.8 | | Engine 2.2-liter -37 ?� / -45 ?� to the air conditioner. | 3.8 / 4.1 | 2.3 / 2.6 | 1.2 / 1.6 | 0.5 / 0.8 | | Engine 2.5 l -37 ?� / -45 ?� | 3.8 / 4.1 | 2.3 / 2.6 | 1.2 / 1.6 | 0.5 / 0.8 |
A warning Listed in the table are valid for coolant temperature of about 20 ?� C.
Close the sealing cap on the radiator and after the test drive again, check the antifreeze protection.
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