What type of engine oil should be used for a Mercedes-Benz S450?
2 Answers
Mercedes-Benz S450 should use 5W-40 engine oil. Engine oil selection: Naturally aspirated engines have relatively general requirements for oil quality, and mineral oil or semi-synthetic oil can be used. If the owner has a higher budget, fully synthetic oil can be used. Compared to naturally aspirated engines, turbocharged engines have a more compact structure and operate in harsher conditions, requiring higher-performance engine oil with better fluidity. Fully synthetic oil is the best choice. Advantages of fully synthetic oil: Fully synthetic oil offers superior quality, and its benefits can be noticeably felt in the following aspects: smoother cold starts, better fuel efficiency, longer oil change intervals (approximately 1.5 times or more compared to conventional lubricants), extended engine lifespan, reduced maintenance frequency, and cleaner engine cylinders due to the excellent detergency of fully synthetic oil.
I've been driving this Mercedes-Benz S450 for almost five years now, and I always use 0W-40 full synthetic oil for maintenance, which must meet the MB 229.5 specification, such as Mobil 1 or Castrol Edge. The manual clearly states this viscosity standard, which is crucial for protecting the engine from wear under high loads, especially ensuring quick lubrication during cold starts in winter. I remember last time I tried to save some money by using regular semi-synthetic oil, but not only did fuel consumption increase, it almost caused the engine noise to rise. Now, during every maintenance session, I remind the technician to check the oil grade to avoid wrong choices that could harm the car's lifespan. Overall, the cost is higher, but it's worth it.
