Maintaining the 2023 Mercedes-Benz G63 4X4 Squared AMG requires a maintenance regimen that matches its aggressive engineering and unique positioning in the automotive world. This is not a standard luxury SUV; it is a heavily modified off-road powerhouse that demands premium protection for its complex drivetrain. The vehicle is equipped with a twin-turbocharged 4.0L V8 engine, designated by the manufacturer as Engine Code 177.980 C Turbo. Because of the high performance stresses, extreme temperatures, and the sheer weight of the vehicle, using subpar fluids can lead to premature wear, reduced performance, and costly repairs. Proper lubrication ensures that every moving part, from the turbochargers to the portal axles, operates with maximum efficiency and longevity.
Recommended AMSOIL Products
- AMSOIL 0W-30 MS 100% Synthetic European Motor Oil – Engineered specifically for the high-performance demands of the 4.0L V8 engine, providing superior protection against high heat and turbocharger stress while ensuring cold-start reliability.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A 50/50 pre-mix formula that protects the cooling system against freezing and overheating, featuring an OAT formulation compatible with all metals and hoses in the G-Class cooling system.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option offering extended life and superior corrosion protection, ideal for those who prefer to mix their own coolant to exact specifications for this heavy-duty vehicle.
- AMSOIL SEVERE GEAR 75W-85 100% Synthetic Gear Lube – Optimized for the front and rear differentials and transfer case of the 4X4 Squared AMG, this fluid minimizes heat and protects limited-slip differentials from wear during extreme off-roading.
- AMSOIL SEVERE GEAR 75W-90 100% Synthetic Gear Lube – A robust lubricant designed for the portal drive axles and specific differential configurations, ensuring smooth power delivery and protection against the high torque loads generated by the V8 engine.
The 2023 Mercedes-Benz G63 4X4 Squared AMG features a unique 4.0L V8 engine code 177.980 C Turbo, which is a twin-turbocharged powerhouse. The engine oil capacity for this system is substantial, holding 10 quarts when the filter is replaced. When performing an oil change, it is critical to adhere to the correct torque specifications to prevent leaks or damage to the drain plug. For metal drain plugs, the recommended torque is 15 ft/lbs, while plastic plugs should be tightened to 3 ft/lbs. The oil must be checked after the refill to ensure the proper level is reached.
Proper fluid selection is paramount for this vehicle due to the extreme operating conditions it is designed to withstand. The G63 4X4 Squared is an off-road beast capable of traversing terrain that would stop other vehicles in their tracks. This means the drivetrain is subjected to intense shock loads, dust, mud, and rapid temperature fluctuations. Using a synthetic motor oil designed for European high-performance vehicles ensures that the engine tolerances are maintained, and the turbochargers are adequately lubricated even under load. The European formula contains a precise blend of synthetic base oils and premium additives that meet the stringent requirements of modern Mercedes-Benz engines.
Protection for the Drivetrain and Cooling System
The cooling system of the 4X4 Squared AMG is equally critical. The vehicle requires either 7 quarts of LTCC or 14.5 quarts of HTCC to ensure the massive engine and transmission remain at optimal operating temperatures. The recommended antifreeze options offer protection up to 150,000 miles or 5 years, which reduces the frequency of flushes. The phosphate-free, nitrate-free, and nitrite-free formulations prevent corrosion within the cooling passages, ensuring efficient heat transfer away from the engine block and cylinder heads.
When it comes to the differentials and transfer case, the specialized nature of the 4X4 Squared chassis requires lubricants that can handle high pressure and shear forces. The front portal drive and transfer case require specific fluid viscosities to function correctly. AMSOIL SEVERE GEAR 75W-85 is recommended for several of these points, including the front portal drive and transfer case, with a capacity of 2.5 pints for the front. The rear differential also utilizes this specification, holding 3.2 pints. For the portal drive axles on both the front and rear, a slightly different viscosity is often indicated due to the unique gearing; the 75W-90 synthetic gear lube is the choice here, with a capacity of 0.8 pints for each portal drive unit. These fluids contain friction modifiers necessary for limited-slip applications, ensuring that power is distributed effectively to the wheels without binding or excessive heat buildup.
Seasonal and Maintenance Additives
For owners who may not drive the G63 4X4 Squared regularly or who plan to store the vehicle for extended periods, protective measures are essential. AMSOIL Gasoline Stabilizer helps keep fuel fresh for up to 12 months, protecting against the varnish and gum buildup that can clog fuel injectors. This is particularly important for vehicles that sit idle, as ethanol in modern gasoline can degrade quickly. Additionally, AMSOIL Engine Fogging Oil provides a highly effective rust preventive layer, coating internal engine components to guard against corrosion during storage.
For ongoing performance maintenance, AMSOIL P.i. Performance Improver Gasoline Additive is a recommended inclusion. This additive helps restore up to 14% of lost horsepower and cleans GDI fuel injectors to 100% flow rate after a single tank of fuel. It also reduces the need for higher-octane fuel and helps control pre-ignition knock, a common concern in high-compression turbocharged engines. By keeping the fuel system clean, the engine can maintain its peak performance characteristics and fuel economy.
About the Vehicle
The 2023 Mercedes-Benz G63 4X4 Squared AMG represents the pinnacle of luxury off-road engineering. Based on the iconic G-Class platform, this vehicle is distinct from the standard G-Wagon due to its “4X4 Squared” designation, which indicates a unique, highly modified chassis developed in partnership with AMG. The vehicle boasts an extraordinary ground clearance, allowing it to tackle extreme off-road obstacles that are impassable for almost any other production vehicle on the market. It retains the boxy, utilitarian aesthetic of the original G-Wagon but is packed with modern luxury and cutting-edge technology inside.
Under the hood, the 4.0-liter twin-turbocharged V8 engine produces immense power, delivering acceleration that rivals many sports cars despite the vehicle’s massive weight. The suspension has been significantly upgraded to accommodate the increased height and the rigors of off-road use, featuring adaptive damping that allows for a comfortable ride on pavement while remaining robust enough for rock crawling and sand driving. The vehicle is manufactured in Graz, Austria, at the Magna Steyr plant, a facility renowned for producing complex and high-precision vehicles.
Owners of the G63 4X4 Squared value this vehicle for its unparalleled combination of presence and capability. It is a statement piece that can serve as a daily driver or an expedition vehicle. The unique portal axles and increased articulation allow the tires to stay in contact with the ground in situations where other vehicles would lose traction. This level of mechanical sophistication underscores the importance of using premium fluids and lubricants that can sustain such demanding operations. Whether the vehicle is being driven on a winding mountain road or through a muddy trail, the internal components require the highest level of protection to ensure reliability and longevity.
Maintaining the 2023 Mercedes-Benz G63 4X4 Squared AMG is an investment in the longevity and performance of one of the most capable vehicles ever produced. By adhering to the specific fluid recommendations and using high-quality synthetic lubricants, owners can ensure that this complex machine continues to perform at the highest level, ready to handle whatever challenges lie ahead.