The 2007 Mercedes-Benz SL55 AMG is a high-performance grand tourer that demands precision in its maintenance schedule. Powered by the legendary M113 5.5L supercharged V8 engine, this vehicle operates under significant thermal and mechanical stress. Using the correct lubricants is not merely a recommendation; it is essential for preserving the integrity of the engine’s tight tolerances, the automatic transmission, and the advanced brake systems. AMSOIL synthetic lubricants are formulated to provide superior protection, ensuring that every component of your SL55 AMG performs at its peak, regardless of driving conditions.
Recommended AMSOIL Products
For the 2007 Mercedes-Benz SL55 AMG with the 5.5L engine, the following AMSOIL products are specifically designed to meet the manufacturer’s rigorous requirements.
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – Engineered for European vehicles, this oil features a precise blend of synthetic base oils and premium additives to protect against wear in supercharged engines.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – Provides excellent cold-start protection and high-temperature stability for the unique demands of Mercedes-Benz gasoline and diesel engines.
- AMSOIL Oil Filter – Offers 99% filtering efficiency at 20 microns with greater capacity to capture contaminants, significantly extending engine life.
- WIX Oil Filter – Provides premium media that offers improvements over original equipment manufacturer (OEM)-branded filters.
- MANN-FILTERS Oil Filter – Features premium media offering improvements over original equipment manufacturer (OEM)-branded filters.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique OAT formulation that protects cooling system metals, gaskets, and hoses for up to 150,000 miles.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option requiring mixing with distilled water, providing protection up to 150,000 miles.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands heavy towing, elevated temperatures, and the rigors of the 722.6 transmission while remaining fluid in sub-zero conditions.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Offers protection against wear with OE fuel-efficient properties.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers excellent ABS responsiveness and stable viscosity across a wide temperature range, superior to standard DOT 3 and DOT 4 fluids.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Helps seals remain soft to prevent leaks, resists heat for extended fluid life, and ensures quiet operation.
Maintenance of the 2007 SL55 AMG requires careful attention to fluid capacities and specifications. The engine oil capacity is approximately 9.0 quarts with a filter change. Owners should note that models equipped with an oil cooler may require additional oil if the cooler is drained during service. It is critical to allow at least five minutes after refilling or turning off the engine before checking the oil level to ensure an accurate reading. The torque specification for the oil drain plug is 25 ft/lbs. For the cooling system, a full capacity of 12.7 quarts is required. The automatic transmission, specifically the 722.6 model (SL057), holds a total fill of 9.2 quarts for the 5-speed unit.
Choosing the right oil viscosity is vital for the M113 engine. AMSOIL recommends both 5W-40 and 0W-40 synthetic European motor oils depending on ambient temperatures. The 0W-40 grade is ideal for all temperatures, offering exceptional flow in extreme cold, while the 5W-40 is recommended for temperatures above -25°C. These oils are designed to handle the extreme heat generated by the supercharger and the high-revving nature of the AMG-tuned powerplant. Regular changes using these high-performance fluids help prevent oil sludge, which can clog critical oil passages and lead to premature engine wear. Pairing these oils with a high-quality filter, such as the AMSOIL Oil Filter or the WIX Oil Filter, ensures that the circulating oil remains clean, removing harmful particulates before they can cause damage to bearings and camshafts.
The transmission of the SL55 AMG is equally critical to the vehicle’s performance. The 722.6 automatic transmission is a sophisticated component that benefits greatly from synthetic lubricants. AMSOIL Signature Series and OE Fuel-Efficient transmission fluids are tested to provide the necessary friction characteristics and thermal stability. Using a synthetic fluid helps maintain consistent shift quality and protects against the wear and tear associated with the high torque output of the supercharged V8. Additionally, the brake system requires a fluid that will not boil under hard cornering or aggressive braking. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid raises the boiling point well above standard specifications, ensuring firm pedal feel and safety in demanding driving scenarios. The AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid, though often overlooked, plays a key role in the smooth operation of the steering rack. Synthetic fluid prevents seal hardening and protects against the heat and friction inherent in the power steering system.
About the Vehicle
The 2007 Mercedes-Benz SL55 AMG represents a pinnacle in the history of German grand touring cars. Part of the R230 generation, which debuted in 2002, the SL-Class was known for its distinctive styling, combining the elegance of a coupe with the open-air freedom of a convertible. The SL55 AMG variant was powered by the M113 5.5-liter naturally aspirated supercharged V8 engine. This engine, while technically the “M113,” was heavily tuned by AMG to produce a robust 481 horsepower and 568 lb-ft of torque. This powertrain delivered linear acceleration and a rich, deep exhaust note that appealed to enthusiasts who valued character over the increasing turbocharging trends of the era. The supercharger system required robust lubrication to manage the heat generated during boost events, making fluid quality a non-negotiable aspect of ownership.
Drivers often selected the SL55 AMG for its versatility. It was a car capable of high-speed Autobahn cruising yet practical enough for daily use, with a well-insulated interior that offered a serene refuge from road noise. The R230 platform introduced a retractable hardtop, a significant evolution from the previous soft-top predecessors, providing better security and insulation. The interior was appointed with premium leather, wood trim, and advanced electronics for its time, including the COMAND navigation system and a sophisticated sound system. The vehicle’s chassis was tuned for a blend of comfort and agility, utilizing independent multi-link suspension at both the front and rear to ensure precise handling and a smooth ride quality.
While the SL55 AMG is renowned for its performance, there are specific maintenance challenges that owners should be aware of. These areas of concern can be effectively mitigated or managed through the use of high-quality AMSOIL synthetic lubricants.
- Valve Train Noise: The M113 engine is known to develop valve train noise or “ticking” as it ages, often due to wear in the hydraulic lash adjusters or oil passage restrictions. This issue can lead to excessive noise and potential wear on the camshafts. Using a high-performance synthetic oil with robust anti-wear additives can help maintain film strength and reduce this noise by keeping the hydraulic components clean and properly lubricated.
- Oil Consumption and Coking: Supercharged engines can be prone to oil consumption, and older M113 engines may experience oil coking in the valve cover or turbocharger lines due to heat soak and oxidation. AMSOIL European motor oils are formulated to resist oxidation and coking better than conventional oils, potentially reducing sludge buildup and extending the time between cleanings.
- Transmission Solenoid Wear: The 722.6 transmission is sensitive to fluid degradation. Over time, the friction modifiers in the fluid can break down, leading to hesitation, harsh shifts, or solenoid sticking. Switching to a 100% synthetic automatic transmission fluid helps maintain the correct friction properties and prevents the accumulation of varnish that can cause electronic shifting issues.
- Seal Hardening in Cooling System: The cooling system, with its complex network of hoses and seals, can suffer from premature drying and cracking due to heat cycling and AMSOIL Passenger Car & Light Truck Antifreeze & Coolant. AMSOIL Propylene Glycol Antifreeze and Engine Coolant formulations are designed to protect rubber components and metals, reducing the likelihood of leaks and corrosion that can compromise the engine’s cooling efficiency.
The SL55 AMG remains a beloved vehicle for those who appreciate raw mechanical power and classic design. By adhering to a strict maintenance regimen using the correct synthetic fluids, owners can ensure that this powerful grand tourer continues to deliver the performance and reliability it was designed for. Whether you are tracking the car on a weekend or enjoying a long-distance tour, the right lubricants provide the peace of mind that comes with knowing your vehicle is protected to the highest standards.