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The Mercedes Benz CLS550 stopped being made in 2018, but remains a popular choice for those seeking a powerful Mercedes without breaking the bank. These vehicles were equipped with a 5.5L V8 engine producing 382 horsepower. To maintain it, you can choose between 5W-30 or 5W-40 synthetic blend motor oil, with a total capacity of 8.5 US quarts when including the filter. Due to its larger oil capacity, you'll need to buy 2 one-gallon jugs plus an extra quart to save money if doing it yourself. Taking it to a shop for an oil change can cost between $140 and $210, more expensive than regular cars because of the higher oil capacity.
The Mercedes CLS550 requires SAE 5W-30 engine oil for optimal performance.