The 2008 Mercedes-Benz S600 with the 5.5L 12-cylinder engine (Engine Code 275.95 Y Turbo) is a masterpiece of German engineering, demanding the highest level of protection to maintain its performance and longevity. Proper lubrication is not merely a maintenance task for this vehicle; it is a critical requirement for the health of its high-output twin-turbo V12 powerplant. The extreme thermal and mechanical stresses generated by this engine necessitate synthetic motor oil that can withstand high temperatures while providing rapid protection on startup.
Recommended AMSOIL Products
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – This oil is specifically designed for the unique demands of European gasoline, diesel, and hybrid vehicles, featuring a precise blend of synthetic base oils and premium additives to handle the twin-turbo environment.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – An excellent choice for all operating temperatures, offering superior flow properties at low temperatures and robust protection at high heat for this high-performance engine.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands the rigors of the 5-speed automatic transmission, remaining fluid in sub-zero temperatures while providing reserve protection during heavy use.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Provides protection against wear and maintains optimal shift quality for the Mercedes-Benz automatic transmission.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid formulation that protects all cooling system metals, gaskets, and hoses, engineered to exceed original equipment manufacturer requirements.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option that offers exceptional protection up to 150,000 miles or 5 years, with superior performance against metallic corrosion and erosion.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers excellent ABS and traction-control responsiveness with a stable viscosity over a wide temperature range, ensuring consistent braking performance.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Reduces friction and helps seals remain soft to prevent leaks, while providing strong anti-wear protection and high-temperature endurance.
Engine Oil Specifications and Capacities
The heart of your 2008 S600, the 5.5-liter V12 engine with engine code 275.95 Y Turbo, operates under significant stress due to its twin-turbocharger configuration. Maintaining optimal oil pressure and film strength is essential for the longevity of the turbo bearings and the overall engine assembly. For this vehicle, the recommended oil viscosity grades are 0W-40 and 5W-40, which are suitable for all operating temperatures.
The total engine oil capacity, including the oil filter replacement, is 9.5 quarts. It is crucial to note that on models equipped with an oil cooler, additional oil may be required if the cooler system is drained during service. Proper oil volume ensures that the engine receives adequate lubrication across all moving parts, from the crankshaft to the camshafts. When performing an oil change, ensure the oil drain plug is torqued to the manufacturer’s specification of 22 ft-lbs to prevent leaks or damage to the oil pan threads. After refilling the engine, it is advisable to allow approximately 5 minutes for the oil to settle before checking the oil level again, ensuring an accurate reading on the dipstick or electronic sensor.
While the standard motor oil grades are sufficient, selecting the right synthetic formulation can significantly impact engine cleanliness and wear protection. The AMSOIL FS European Motor Oils are formulated specifically for these high-performance European engines, featuring precise blends of synthetic base oils and premium additives. These oils are designed to blow past the highest industry standards, providing protection against the thermal breakdown that can occur with conventional oils under the extreme heat of a twin-turbocharged V12.
Transmission and Cooling System Maintenance
The 5-speed automatic transmission (Model 722.6) in the 2008 S600 is a robust unit, but like any complex hydraulic system, it relies on fluid integrity for smooth shifting and longevity. The total fill capacity for this transmission is 8.1 quarts. Using a fluid that can handle elevated temperatures and heavy loads is critical, as transmission failures in these vehicles can be extremely costly. The AMSOIL Signature Series Fuel-Efficient Automatic Transmission Fluid is an ideal choice, capable of withstanding heavy towing, elevated temperatures, and challenging terrain while remaining fluid in sub-zero conditions.
The cooling system is equally vital, as the S600 generates a substantial amount of heat. The capacity for the cooling system is 14.7 quarts (FR & RR). Over time, standard coolant can degrade, leading to corrosion and reduced heat transfer efficiency. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a 50/50 pre-mix formulation made from ethylene glycol, designed to protect all cooling system metals, gaskets, and hoses. It is phosphate-, nitrate-, nitrite-, silicate-, borate-, and amine-free, making it compatible with all other antifreeze colors and ensuring long-term protection for up to 150,000 miles or 5 years.
Braking and Steering Fluids
For the braking system, the S600 requires a high-performance fluid that meets Mercedes-Benz specifications. The recommended fluid is DOT 4 plus (specifically part numbers 0009895605090109, previously 0009895605110111, or 000989080701), or any product approved on MB Sheet 331.0. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid meets these rigorous standards. It provides excellent responsiveness for the vehicle’s advanced ABS and traction-control systems, maintaining a stable viscosity across a wide range of temperatures to ensure consistent braking force even during spirited driving.
The power steering system also benefits from a synthetic fluid that resists oxidation and heat. AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid is formulated for quiet operation and strong anti-wear protection. It reduces friction within the steering system and helps keep seals soft, which is essential for preventing leaks in older vehicles. This fluid’s ability to resist heat ensures a long fluid life, maintaining the smooth and precise steering characteristics expected from a luxury Mercedes-Benz.
About the Vehicle
The 2008 Mercedes-Benz S600 represents the pinnacle of the W220 generation of the S-Class, a model line that has defined luxury sedans for decades. This specific model year features the iconic M275 5.5-liter V12 engine, a powerhouse known for its smooth, linear power delivery and impressive torque output. The S600 was engineered to offer a balance of supreme comfort and surprising performance, capable of rapid acceleration and high-speed cruising with a level of refinement that few competitors could match.
Powered by a twin-turbocharged V12, this vehicle was a benchmark in the ultra-luxury segment during the late 2000s. The engine code 275.95 Y indicates the specific configuration of this high-output unit, which was celebrated for its robust construction and ability to handle the demands of high-mileage use. The S600 was often chosen by executives and enthusiasts who valued both the prestige of the brand and the sheer mechanical capability of a 12-cylinder engine in a sedan. Its suspension system, designed to absorb road imperfections while maintaining stability, contributed to its reputation as a world-class grand tourer.
Owners of this vehicle typically appreciate its spacious interior, advanced technology for its time, and the quiet, isolated driving experience it provides. The S600 was not just a mode of transport; it was a statement of status and a showcase of automotive engineering excellence. Maintaining this vehicle with high-quality synthetic lubricants helps preserve its original character, ensuring that the V12 engine continues to purr smoothly and the transmission shifts seamlessly for years to come. Whether used for daily commuting or long-distance travel, the S600 remains a formidable presence on the road.
Seasonal Storage and Additional Care
For owners who use their S600 seasonally or who plan to store the vehicle for extended periods, proper preparation is essential to prevent degradation of fluids and components. During storage, fuel can oxidize and form varnish, which can clog injectors and fuel lines. AMSOIL Gasoline Stabilizer can keep fuel fresh for up to 12 months, protecting against ethanol corrosion and gum buildup. Additionally, AMSOIL Engine Fogging Oil can be used to coat internal engine components, preventing rust and corrosion during long periods of inactivity.
Regular maintenance and the use of specialized care products can also enhance the longevity and appearance of the vehicle. For cleaning, AMSOIL Heavy-Duty Degreaser is effective at removing oil, tar, and grime from engine surfaces, while AMSOIL Brake and Parts Cleaner ensures that brake components are free of contaminants for optimal performance. For exterior protection, the AMSOIL Exterior Ceramic Spray provides a tough, water-repellent finish that protects against UV rays. Interior care can be handled with AMSOIL Interior Detailer, which offers multi-surface cleaning and 90-day UV protection while trapping and eliminating odors. By combining these specialized fluids and cleaners with the core lubrication products, owners can ensure their 2008 Mercedes-Benz S600 remains in peak condition.
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