How many liters of coolant does a Mercedes-Benz S350 need to add?
2 Answers
Mercedes-Benz S350 generally requires 5 to 6 liters of coolant. Coolant is a special additive-containing liquid primarily used in liquid-cooled engine cooling systems. It offers excellent performance features such as antifreeze protection in winter, anti-boil in summer, and year-round anti-scale and anti-corrosion properties. Can different coolants be mixed: It is necessary to use the same brand of coolant. Different brands of coolant may have varying production formulas, and mixing them could lead to chemical reactions between multiple additives, resulting in additive failure. How to determine if coolant is low: Observe the coolant warning light on the dashboard. If it lights up, it is likely due to low coolant levels, although it could also be caused by excessively high cylinder temperatures. Check the coolant reservoir. If the liquid level is below the minimum mark (MIN), do not continue driving and add coolant promptly. Check the water level scale marks on the coolant tank. Normal coolant levels should be between the maximum and minimum water level marks. Whether coolant is low depends on these marks. If the coolant is below the minimum water level, it indicates a shortage of coolant.
The specific amount of antifreeze to add to a Mercedes-Benz S350 depends on the current fluid level. I’ve had similar experiences while driving this model myself. The total system capacity is approximately 8 to 10 liters, but routine maintenance only involves topping up the missing amount. When you notice the coolant warning light or the reservoir level drops below the minimum mark, wait for the engine to cool, then open the radiator cap and pour in antifreeze—typically adding 1 to 2 liters will restore the level. A 50% antifreeze and 50% distilled water mixture is ideal; avoid using pure tap water as it may corrode components. DIY refills save money and are convenient, but always ensure the engine is cold—opening a hot cap risks scalding. Regularly check the level; if it drops too quickly, it indicates a potential leak or aging issue—promptly visit a professional shop for inspection and repairs to prevent bigger problems.
