The 2021 Mercedes-Benz GLE63 AMG S SUV is a powerhouse of engineering, combining luxury with the raw performance of a 4.0-liter twin-turbo V8. This high-performance machine places immense demand on its lubrication system, requiring fluids that can withstand extreme heat, turbocharger stress, and the specific metallurgical requirements of European engines. Choosing the right synthetic lubricants is essential to maintain the vehicle’s dynamic driving character, ensure precise transmission shifts, and protect critical components against the wear inherent in an AMG chassis.
Recommended AMSOIL Products
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – A precise blend designed for European gasoline, diesel, and hybrid vehicles, offering protection for the 177.980.1 Turbo engine in temperatures above -25°C.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – The preferred viscosity for all temperatures, ensuring optimal flow and protection for the turbocharged engine while achieving the lowest fuel consumption.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-OAT formulation that is phosphate and silicate-free, protecting the cooling system metals and hoses while exceeding OEM requirements.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated coolant that requires mixing with distilled water, offering extended protection against corrosion and erosion up to 150,000 miles.
- AMSOIL Gasoline Stabilizer – Essential for seasonal storage, this additive keeps fuel fresh for up to 12 months and protects against varnish and gum buildup in the GLE63’s fuel system.
- AMSOIL P.i. Performance Improver Gasoline Additive – Restores up to 14% horsepower and cleans GDI fuel injectors to 100% flow rate, helping maintain the engine’s peak performance and fuel economy.
- AMSOIL Upper Cylinder Lubricant Corrosion Inhibitor – Provides critical lubrication for the upper cylinders and fuel system, compatible with capless fuel systems to reduce wear on valve guides.
- AMSOIL Synthetic Multi-Purpose Grease – Resists thermal and oxidation degradation for long-term performance in heavy and abusive loads.
- AMSOIL Heavy-Duty Metal Protector – Contains special rust and corrosion inhibitor additives to protect against the effects of salt, moisture, and chemical corrosion.
- AMSOIL Silicone Spray – Protects with a dry lubricating film ideal for surfaces that may be damaged by conventional lubricants.
- AMSOIL Heavy-Duty Degreaser – Dissolves oil, tar, and grime quickly for professional-strength cleaning.
- AMSOIL Power Foam® Carburetor and Induction-System Cleaner – Cleans deposits from ethanol and degraded fuel, maximizing horsepower.
- AMSOIL Miracle Wash Waterless Wash and Wax Spray – Leaves vehicles with a fantastic shine and tough protective finish with no soap or water required.
- AMSOIL Brake and Parts Cleaner – Quickly removes oil, grease, brake fluid, and other contaminants from brake parts and automotive components.
- AMSOIL Mudslinger® Mud and Dirt Repellent – Provides a protective, non-stick layer of armor against the accumulation of mud, dirt, and snow.
- AMSOIL Engine Degreaser – Professional-strength formula to quickly remove the toughest grease, dirt, and grime from engine surfaces.
- AMSOIL Glass Cleaner – Effectively cuts through grease and grime for streak-free results.
- AMSOIL High-Foam Car Shampoo – Hard on dirt, gentle on coatings and finishes for a thorough clean.
- AMSOIL Exterior Ceramic Spray – Sheds water rapidly and protects against UV rays.
- AMSOIL Interior Detailer – Light Lemon – Multi-surface use with 90-day UV protection.
- AMSOIL Interior Detailer – Scent Free – Multi-surface use with 90-day UV protection.
- AMSOIL Engine Fogging Oil – Highly effective rust preventive designed to protect internal engine components during storage.
- AMSOIL MP Metal Protector – Cuts through rust and frees frozen components.
Maintaining the 2021 Mercedes-Benz GLE63 AMG S requires a rigorous approach to lubrication, particularly for its 4.0L 8-cylinder engine (Engine Code 177.980.1 Turbo). The manufacturer specifies specific viscosity grades to ensure the engine performs under the high loads generated by the twin-turbo setup. Using AMSOIL 0W-40 FS 100% Synthetic European Motor Oil is recommended for all temperature conditions. This specific grade is designed to achieve the lowest possible fuel consumption while providing the necessary film strength to protect the turbochargers and valvetrain. For climates where temperatures drop below -25°C, the 5W-40 FS variant offers the same premium protection with a slightly different cold-flow profile, allowing owners to select the fluid best suited to their local weather. The engine oil capacity for this powerplant is 10 quarts when including a filter replacement. After refilling, it is critical to check the oil level manually to ensure optimal lubrication coverage.
While the engine is the heart of the vehicle, the cooling system plays a vital role in maintaining efficiency and preventing overheating. The GLE63 AMG S utilizes an advanced thermal management system that benefits from high-quality antifreeze. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a 50/50 pre-mix formulation engineered to protect all cooling system metals, gaskets, and hoses. Its organic acid technology (OAT) base is free from phosphates, nitrites, and silicates, ensuring compatibility with the vehicle’s cooling components and offering up to 150,000 miles or five years of protection. For those who prefer a concentrated option, AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers the advantage of custom mixing with distilled water, extending service life and performance in extreme temperatures.
Although the source data does not list specific filters, transmission fluids, or differential lubricants for this model year, the engine and coolant recommendations provide a solid foundation for vehicle care. For owners looking to extend fuel system performance, AMSOIL P.i. Performance Improver is a potent additive that addresses the carbon buildup common in gasoline direct injection (GDI) engines like the one in the GLE63. By restoring injectors to 100% flow rate, this additive helps maintain the engine’s rated power and improves overall fuel economy. Additionally, for seasonal storage, the AMSOIL Gasoline Stabilizer ensures that the fuel in the tank remains fresh, preventing the degradation that can lead to clogged injectors and starting issues upon return.
Vehicle Background
The 2021 Mercedes-Benz GLE63 AMG S SUV represents the pinnacle of the GLE lineup, blending the practicality of a large luxury crossover with the aggressive performance of Mercedes-AMG. At the core of this machine is the 4.0-liter M177 V8 biturbo engine, a masterpiece of engineering that delivers staggering power and instant throttle response. This engine code, 177.980.1, is a testament to the high-stress environment under the hood, where temperatures can soar and RPMs climb rapidly during spirited driving or hard acceleration on the track. The “S” designation in GLE63 AMG S indicates a higher output variant, fine-tuned for drivers who demand the absolute best in acceleration and handling dynamics.
Originating from the legendary performance division in Affalterbach, Germany, the AMG brand has long been synonymous with supercar-like performance in everyday vehicles. The GLE class, as a mid-size luxury SUV, competes directly with rivals like the Audi Q7 and BMW X5, but the AMG S variant sets itself apart with its track-ready suspension, sport exhaust, and unique styling cues. The vehicle is built to handle heavy loads and high-speed maneuvers with stability, yet it offers the refined comfort expected of a Mercedes-Benz. Owners of the GLE63 AMG S often value its dual nature: it is a capable family hauler that can transform into a performance weapon with the push of a button.
Despite its robust engineering, the 2021 GLE63 AMG S is subject to common issues faced by high-performance German SUVs, particularly regarding its sophisticated engine and electronic systems. One prevalent concern is carbon buildup on the intake valves, a characteristic issue for many direct injection engines over time. This can lead to rough idling and reduced efficiency. Using high-quality synthetic motor oils and fuel additives like AMSOIL P.i. can significantly mitigate this issue by keeping combustion chambers cleaner. Another common challenge involves oil leaks, often originating from the valve cover gaskets or oil filter housing due to thermal expansion and contraction from the intense heat generated by the twin turbos. Premium synthetic oils that resist thermal breakdown and maintain stable viscosity can help reduce the stress on these seals and prolong their life.
Additionally, the complex electronics and suspension systems in the GLE63 AMG S can sometimes experience software glitches or sensor errors that may require updates or specialized diagnostic equipment. While not a mechanical failure, these electronic gremlins can disrupt the driving experience. Proper maintenance of the vehicle’s fluid systems, including regular cooling system flushes to prevent corrosion and maintain optimal operating temperatures, helps reduce the thermal stress on these electronic components. Furthermore, the high-performance brake systems and tires required for this vehicle can degrade faster if the car is subjected to frequent aggressive driving without adequate cooling. Ensuring the brake fluid and cooling systems are in top condition through the use of high-performance fluids can help preserve the integrity of these critical safety components. By adhering to a strict maintenance regimen using the recommended AMSOIL fluids, owners can address these potential weak points and keep their GLE63 AMG S performing at its peak for years to come.
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