The 2016 Mercedes-Benz S550 is a masterclass in engineering, combining luxury with the raw power of a twin-turbocharged 4.7-liter V8 engine. To keep this sophisticated machine performing at its peak, using the correct lubricants is not just a recommendation; it is a requirement. The high-temperature demands of the turbocharger and the precision tolerances of the German-engineered engine require a lubricant that exceeds standard industry specifications. AMSOIL 5W-40 FS 100% Synthetic European Motor Oil is formulated to provide the necessary protection against wear, thermal breakdown, and sludge, ensuring your S550 runs smoothly whether you are navigating city streets or cruising on the highway.
Recommended AMSOIL Products
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – A premium synthetic designed specifically for the unique demands of European vehicles, featuring a precise blend of base oils and additives for superior protection against turbocharger heat and wear.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – An excellent alternative viscosity for extreme temperature conditions, offering the same high-quality protection for gasoline, diesel, and hybrid European engines as the 5W-40 formula.
- WIX Oil Filter – A premium filtration system that offers improvements over original equipment manufacturer-branded filters, ensuring contaminants are effectively removed to extend engine life.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid (OAT) formulation that protects the cooling system metals, gaskets, and hoses while exceeding original equipment manufacturer requirements for up to 150,000 miles.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Designed to withstand the rigors of heavy towing, elevated temperatures, and challenging terrain while remaining fluid in sub-zero conditions for your 7-speed transmission.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers excellent ABS and traction-control responsiveness with stable viscosity over a wide temperature range, meeting or exceeding Mercedes-Benz Sheet 331.0 standards.
Proper maintenance of the 2016 Mercedes-Benz S550 involves attention to detail regarding fluid capacities and specific technical requirements. For the engine, a total capacity of 8.5 quarts is required when including a filter change. The cooling system holds 12.8 quarts of AMSOIL Passenger Car & Light Truck Antifreeze & Coolant. The automatic transmission, specifically the 722.967 models, requires 10.2 quarts for a total fill. It is critical to check the oil level after the refill and adhere to the specified torque settings for the drain plug, which can vary between 3 ft/lbs for plastic plugs and 22 ft/lbs for M14 bolts. Selecting the right filter media is just as important as the oil itself, as the WIX Oil Filter provides superior filtration to keep the engine clean and running efficiently.
Protecting the Turbocharged V8 Engine
The 4.7-liter biturbo V8 in the S550 generates significant power and heat. Standard mineral oils can break down under these extreme thermal conditions, leading to sludge formation and accelerated wear on critical components like the turbocharger bearings and camshafts. AMSOIL 5W-40 FS 100% Synthetic European Motor Oil utilizes advanced additive packages to combat oxidation and thermal breakdown. The 5W-40 FS formula is engineered for the specific demands of European vehicles, offering a balance of protection and fuel economy. Whether your vehicle operates in scorching summer heat or freezing winter mornings, the synthetic base oils ensure consistent viscosity and protection where it matters most. Using the correct viscosity for your climate and driving style is essential, with both 5W-40 and 0W-40 FS 100% Synthetic European Motor Oil options available to suit different temperature ranges.
In addition to the engine oil, the cooling system plays a vital role in maintaining the engine’s lifespan. The 2016 S550 requires a robust antifreeze solution to handle the high thermal loads of the V8. AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers phosphate-, nitrate-, nitrite-, silicate-, borate-, and amine-free protection. This chemically inert formulation ensures compatibility with the aluminum and plastic components found in modern cooling systems, preventing corrosion and ensuring efficient heat transfer. The extended service interval of up to 150,000 miles or five years means less maintenance downtime and more time on the road.
Transmission and Brake System Care
Shifting smoothly in the S550 is a hallmark of its luxury status, but this requires a transmission fluid that can handle the complex shifting of a seven-speed automatic under load. The transmission fluid must protect against wear, sludge, and temperature-related problems while maintaining the correct frictional characteristics to prevent shudder or slipping. AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid and AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid are designed for these demanding applications. They provide a fluid film that remains stable even under the stress of heavy towing or spirited driving, protecting the clutch packs and valve bodies from premature wear. Note that for vehicles with the reduced-friction data card code A89, specific fluid compatibility must be maintained, and AMSOIL offers options tailored to these specifications.
Braking performance is non-negotiable for a vehicle of this caliber. The S550’s braking system operates under high heat, especially during performance driving. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid is formulated to provide a stable viscosity range and excellent responsiveness for anti-lock braking systems and traction control. Unlike conventional glycol-based fluids that absorb moisture and lower boiling points over time, the synthetic formula maintains its integrity, ensuring consistent pedal feel and stopping power. This fluid meets Mercedes-Benz Sheet 331.0 standards, making it a direct replacement for factory-specified fluids and ensuring compatibility with the vehicle’s sensitive electronic braking components.
Additional Maintenance and Care
While engine, transmission, and brake fluids are the core of your maintenance regimen, other products can help preserve the longevity and appearance of your S550. Fuel additives like AMSOIL P.i.® Performance Improver Gasoline Additive can restore horsepower and improve fuel economy by cleaning injectors, which is particularly beneficial for direct-injection engines. For seasonal storage, products like AMSOIL Gasoline Stabilizer and AMSOIL Engine Fogging Oil ensure that the vehicle is protected against corrosion and rust when not in use. Exterior care is equally important, with options like the AMSOIL Miracle Wash Waterless Wash and Wax Spray providing protection against UV rays and dirt without the need for frequent water-based washes. These supplementary products work in tandem with the primary lubricants to provide a comprehensive protection plan for your vehicle.
Vehicle Background
The 2016 Mercedes-Benz S550 represents the pinnacle of the S-Class lineup during the W222 generation. This era of the S-Class was highly acclaimed for its technological advancements and commitment to ride comfort. Powered by the M278 4.7-liter V8 biturbo engine, the S550 delivers a smooth and powerful driving experience, often cited as a benchmark for luxury sedans. It was a time when Mercedes-Benz was heavily integrating active safety systems and advanced driver assistance technologies, making the S550 a leader in both performance and safety. The S-Class has historically been the flagship sedan for the brand, where the latest innovations in automotive engineering are first tested and proven. Owners appreciate the S550 for its blend of effortless acceleration, luxurious interior appointments, and sophisticated handling. It occupies a unique market position as a vehicle that can serve as a comfortable cruiser for long-distance travel while possessing enough power for spirited driving. The reputation of the S-Class as a reliable, high-end machine drives owners to maintain it with the same level of care and high-quality fluids that the original manufacturer intended.