The 2012 Mercedes-Benz CL63 AMG is a high-performance grand tourer that combines luxury with raw power, but its demanding engineering places significant stress on the engine and fluid systems. The 5.5-liter V8 twin-turbocharged engine, identified by code 157.980, requires lubricants that can withstand extreme thermal loads and high RPMs while maintaining optimal protection for internal components. Proper maintenance is not just about keeping the car running; it is about preserving the longevity of the high-precision mechanical systems that make this vehicle a standout in the luxury coupe segment.
Recommended AMSOIL Products
For the engine, the CL63 AMG requires oils designed specifically for the unique demands of European gasoline and turbocharged engines. The engine oil capacity is 9 quarts when including the filter change, with a torque specification of 15 ft-lbs for the M12 drain plug bolt. After a refill, the oil level must be verified to ensure proper lubrication. The following AMSOIL motor oils are formulated to provide superior protection for this high-output powerplant.
- 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 handle the stresses of turbocharging and high-performance driving.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – Offering excellent protection in all temperatures, this formula ensures rapid flow during cold starts and stable viscosity under the extreme heat generated by the 5.5L AMG engine.
In addition to engine protection, the cooling system is critical for preventing overheating, especially given the high thermal output of the AMG engine family. The system requires 12.2 quarts of coolant. AMSOIL offers a poly-organic acid (OAT) formulation that protects against corrosion, ensuring the longevity of the cooling system metals, gaskets, and hoses. For those who prefer a concentrated option, AMSOIL Propylene Glycol Antifreeze provides protection for up to 150,000 miles or five years when mixed with distilled water.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – This ready-to-use, ethylene glycol 50/50 pre-mix formulation exceeds OEM requirements and offers protection up to 150,000 miles or five years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated solution that requires mixing with distilled water, designed to greatly surpass standards for metallic corrosion and erosion protection.
Transmission and Drivetrain Maintenance
The 2012 CL63 AMG utilizes a 7-speed automatic transmission (model 722.9) that demands specific fluid properties to function correctly. The total fill capacity is 7.5 quarts. It is important to note the fluid requirements based on the vehicle’s specific data card configuration. For models without the A89 reduced-friction code or with code SL057, the standard fluid is recommended. For models equipped with the A89 reduced-friction code or SL058, a specific fluid formulation is required to ensure proper shifting characteristics and reduced friction. In either case, AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid withstands the rigors of heavy use, elevated temperatures, and challenging terrain while remaining fluid in sub-zero temperatures. Alternatively, AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid provides protection against wear and maintains the performance of the 722.9 transmission system.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Provides reserve protection during heavy use and abuse, ideal for the demanding shifts of a high-performance automatic transmission.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – A cost-effective option that protects against wear and maintains the performance of the 722.9 transmission system.
Brake and Steering System Fluids
Stopping power and handling are paramount for a vehicle of this caliber. The CL63 AMG brake system is sensitive to fluid degradation and moisture content. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid is recommended for applications requiring DOT 4 specifications, such as those with HBH notes. This fluid provides excellent anti-lock braking system (ABS) and traction-control responsiveness, ensuring a stable viscosity across a wide temperature range. Similarly, the power steering system, identified by code PS031, benefits from AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid, a synthetic fluid that reduces friction and helps seals remain soft to prevent leaks.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers a stable viscosity over a wide temperature range for excellent ABS and traction-control responsiveness.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Formulated for quiet operation, it offers strong anti-wear protection and excellent high-temperature performance to keep seals soft and prevent leaks.
Vehicle Background
The 2012 Mercedes-Benz CL63 AMG is a testament to German engineering excellence, sitting at the intersection of ultra-luxury and high-octane performance. As part of the C216 generation, the CL-Class served as the coupe version of the S-Class, but the AMG variant elevated it into a completely different league. Under the hood lies the M275 5.5-liter V8 twin-turbocharged engine, a powertrain that delivered roughly 518 horsepower and substantial torque, propelling the heavy coupe with surprising agility.
This model represents a pivotal era for AMG, transitioning from naturally aspirated V8s to twin-turbocharged technology. The 2012 CL63 was widely praised for its ability to be a comfortable daily driver that could also destroy a supercar on the track. Its suspension and chassis were tuned to handle the immense power output without sacrificing the ride quality expected from a Mercedes-Benz flagship coupe. The vehicle’s reputation rests on its robust construction and the intricate balance of comfort and aggression.
Owners of this vehicle often highlight its grand tourer capabilities, suitable for long-distance travel while retaining the punch needed for spirited driving. The CL63 features a sophisticated electronic stability control system and a 7-speed Speedshift MCT automatic transmission that allows for rapid, smooth gear changes. Whether navigating city streets or winding mountain passes, the 2012 CL63 AMG remains a highly sought-after automobile among enthusiasts who appreciate a blend of heritage, technology, and raw driving dynamics.
Additional Maintenance Recommendations
For owners planning to store the vehicle for extended periods, proper preparation is essential. AMSOIL Gasoline Stabilizer helps keep fuel fresh for up to 12 months, fighting ethanol corrosion and preventing varnish buildup. Additionally, AMSOIL Engine Fogging Oil can be used to protect internal engine components from rust and corrosion during long periods of inactivity. For general maintenance and care, AMSOIL offers a range of products including High-Foam Car Shampoo, Interior Detailer, and Exterior Ceramic Spray to keep the vehicle’s appearance pristine.
- AMSOIL Gasoline Stabilizer – Ideal for seasonal storage, it helps keep fuel fresh and protects against varnish and gum buildup.
- AMSOIL Engine Fogging Oil – A highly-effective rust preventive designed to protect internal engine components during storage or long periods of inactivity.
By using these specialized lubricants, CL63 AMG owners can ensure that their vehicle maintains its performance standards and longevity. Regular fluid changes using the correct AMSOIL products provide a competitive edge in protection, helping to extend service intervals and reduce wear on critical components.