The 2009 Mercedes-Benz SL63 AMG is a high-performance grand tourer that demands the very best in lubrication protection. Powered by a massive 6.3-liter V8 engine, this vehicle operates under extreme thermal and mechanical stress, particularly during spirited driving or track use. The complex engineering of the SL63 AMG requires specific fluid formulations that can withstand high horsepower outputs and rigorous operating conditions. Using the correct synthetic lubricants ensures that the engine, transmission, and hydraulic systems maintain peak efficiency, minimizing wear and maximizing the vehicle’s longevity. Proper fluid selection is not just a maintenance requirement; it is essential for preserving the performance characteristics that owners expect from this iconic German engineering masterpiece.
Recommended AMSOIL Products
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – Designed for the unique demands of European gasoline and diesel vehicles, this oil features a precise blend of synthetic base oils and premium additives to handle high operating temperatures.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – An excellent alternative viscosity that offers superior cold-start protection and high-temperature stability, specifically formulated for European engines.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands the rigors of heavy towing and elevated temperatures while remaining fluid in sub-zero conditions to protect your 722.9 transmission.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Provides reliable protection against wear for the automatic transmission, meeting the specific requirements of the SL63 AMG.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid formulation that protects cooling system metals, gaskets, and hoses, offering protection up to 150,000 miles.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option that requires mixing with distilled water, offering extended service intervals and superior corrosion protection.
- 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 for safe stopping power.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Reduces friction and helps seals remain soft to prevent leaks, providing strong anti-wear protection for the power steering system.
Engine Oil and Fluid Capacities
For the 2009 Mercedes-Benz SL63 AMG, maintaining the correct oil grade and viscosity is critical due to the 6.3-liter V8 engine’s power output. The recommended oil grades are SAE 0W-40 or 5W-40, suitable for all temperatures. When performing a routine oil change, the total capacity is 8.5 quarts, including the filter. However, it is important to note that on models equipped with an oil cooler, additional oil may be required if the cooler is drained during the service. Always allow the engine to sit for approximately five minutes after refilling or turning it off before checking the oil level to ensure an accurate reading. The oil drain plug should be torqued to 22 ft/lbs to prevent leaks without damaging the threads.
While AMSOIL does not currently recommend a specific oil filter for this model in the source data, ensuring the oil change is performed with the correct oil grade is paramount. The vehicle’s engine relies on the precise additive packages found in European-formulated synthetic oils to manage the high combustion temperatures and friction associated with the AMG platform. Using a high-quality synthetic oil helps maintain engine cleanliness and viscosity control, extending the life of critical engine components.
Automatic Transmission Maintenance
The transmission in the 2009 SL63 AMG is a sophisticated 7-speed automatic unit. Proper fluid selection ensures smooth shifting and protects against wear, especially given the torque generated by the 6.3L engine. For models without the reduced-friction code A89 on the datacard, and for those with the code, the total fill capacity for the 7-speed 722.9 transmission is 9.3 quarts. It is crucial to identify whether the vehicle has the specific A89 code, as this affects the friction properties required by the transmission. AMSOIL offers two primary options for this application: the Signature Series Fuel-Efficient fluid and the OE Fuel-Efficient fluid. Both are designed to remain fluid in sub-zero temperatures and withstand the elevated temperatures and challenging terrain often encountered when driving high-performance roadsters. These synthetic fluids provide reserve protection during heavy use and abuse, ensuring the transmission operates smoothly over its service life.
Cooling System and Fluids
A robust cooling system is vital for the SL63 AMG to prevent overheating, which can lead to severe engine damage. The cooling system capacity for this vehicle is 11.9 quarts. AMSOIL offers two distinct coolant options to suit different maintenance preferences. The Passenger Car & Light Truck Antifreeze & Coolant is a 50/50 pre-mix formulation made with ethylene glycol, ready for immediate use. It is phosphate-, nitrate-, nitrite-, silicate-, borate-, and amine-free, making it compatible with all other antifreeze and coolant colors. For those who prefer a concentrated solution, the Propylene Glycol Antifreeze and Engine Coolant offers a robust alternative that must be mixed with distilled or high-quality water. This concentrated coolant provides protection up to 150,000 miles or five years, and it greatly surpasses standards for metallic corrosion and erosion, making it ideal for protecting all cooling system metals and components.
Brake and Power Steering Fluids
Safety and handling are paramount for a vehicle like the SL63 AMG. The recommended brake fluid is a DOT 4 plus specification, specifically meeting MB Sheet 331.0 requirements. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid is an ideal replacement that offers excellent responsiveness for ABS and traction control systems. Its stable viscosity over a wide temperature range ensures consistent pedal feel and braking performance in both extreme cold and heat. Additionally, the power steering system benefits from AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid. This fluid helps seals remain soft to prevent leaks, resists heat for long fluid life, and provides strong anti-wear protection. It is formulated for quiet operation, ensuring that the power steering assist remains smooth and silent throughout the driving experience.
About the Vehicle
The 2009 Mercedes-Benz SL63 AMG represents the pinnacle of grand touring performance during its era. Part of the R230 generation, this roadster is celebrated for its blend of luxury, comfort, and raw power. Under the hood lies the legendary M156 6.3-liter naturally aspirated V8 engine, a powerhouse known for its smooth power delivery and distinctive soundtrack. This engine produces significant horsepower and torque, propelling the heavy convertible to high speeds with surprising agility. The SL63 AMG was designed for owners who refuse to compromise, offering a driving experience that feels at home on both the Autobahn and a weekend road trip.
Owners of this vehicle often appreciate its build quality and the extensive list of standard features, which typically included adaptive suspension, advanced safety systems, and a luxurious interior crafted from premium materials. The R230 chassis provided a solid platform for the high-performance components, allowing the car to handle corners with confidence despite its weight. As a flagship model in Mercedes-Benz’s lineup, the SL63 AMG commanded respect on the road. It sits in a market position that balances exclusivity with everyday usability, making it a favorite among enthusiasts who enjoy long-distance driving without sacrificing performance. The vehicle’s reputation is built on the durability of its engineering, which is why proper maintenance with high-quality fluids is essential for keeping these machines running smoothly for years to come.
Additional Maintenance and Care
For owners looking to extend the life of their vehicle during storage or to enhance performance, AMSOIL offers a variety of additives and care products. AMSOIL P.i. Performance Improver is a gasoline additive that can help restore fuel injectors to 100% flow rate, potentially restoring up to 14% horsepower and improving fuel economy. For seasonal storage, AMSOIL Gasoline Stabilizer helps keep fuel fresh for up to 12 months, protecting against varnish and gum buildup. If the vehicle will be sitting for an extended period, AMSOIL Engine Fogging Oil can be used to protect internal engine components from rust and corrosion. For general maintenance, AMSOIL Synthetic Multi-Purpose Grease offers excellent load-carrying performance and resistance to thermal degradation, making it suitable for chassis and suspension points. Car care enthusiasts can also utilize AMSOIL Miracle Wash Waterless Wash and Wax Spray to clean and protect the vehicle’s finish without the need for water, leaving a fantastic shine that repels dust.