Maintaining the precise fluid specifications required by the 2008 Mercedes-Benz G500 is essential for preserving the longevity and performance of its 5.0L 8-cylinder engine. This powerful vehicle, equipped with the engine code 113.962 N, demands lubricants that can withstand high operating temperatures and provide maximum protection for its internal components. Using the correct viscosity and quality of motor oil, transmission fluid, and other essential fluids ensures smooth operation and prevents premature wear, allowing the SUV to deliver the reliability and capability it was designed for.
Recommended AMSOIL Products
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – Designed specifically for the unique demands of European gasoline and diesel engines, offering precise synthetic base oil blends for superior protection.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – An excellent alternative European formula that provides exceptional flow in cold temperatures while maintaining high-temperature stability.
- AMSOIL Oil Filter – Delivers 99% filtration efficiency at 20 microns, providing greater capacity for small contaminants to help reduce engine wear.
- WIX Oil Filter – A premium media option that offers improvements over standard OEM-branded filters for this specific application.
- MANN-FILTERS Oil Filter – Provides reliable filtration with premium media suitable for maintaining engine cleanliness.
- MANN-FILTERS Air Filters – Ensures clean airflow to the engine, protecting internal components from abrasive contaminants.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A ready-to-use 50/50 pre-mix that protects cooling system metals, gaskets, and hoses for up to 150,000 miles.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated formulation requiring water mix, offering superior protection against corrosion and extended service intervals.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands heavy towing, elevated temperatures, and challenging terrain while remaining fluid in sub-zero conditions.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Provides robust wear protection compatible with the vehicle’s transmission requirements.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – Advanced protection against wear for differential and transfer case applications, controlling thermal runaway and protecting against rust.
- 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.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Formulated for quiet operation with strong anti-wear protection and resistance to heat for long fluid life.
The engine in your 2008 Mercedes-Benz G500 is a robust 5.0-liter V8, requiring a specific capacity of 8.5 quarts of oil when changing the filter. It is crucial to refill the system to the correct level and check the oil level after the refill. The oil drain plug should be torqued to 22 ft/lbs to ensure a secure seal without damaging the threads. AMSOIL offers both the 5W-40 FS and 0W-40 FS formulations, both engineered for the precise demands of European vehicles. These synthetic oils feature a precise blend of base oils and premium additives that outperform conventional oils, ensuring the engine remains protected under all driving conditions. Whether you are driving in extreme heat or sub-zero temperatures, these motor oils maintain their viscosity and provide a protective film that reduces wear and extends the life of your engine components.
Moving beyond the engine, the transmission of the 2008 G500 is a critical component that requires regular maintenance to prevent costly repairs. The automatic transmission, specifically the 722.6 model, has a total fill capacity of 8.5 quarts for a 5-speed configuration. Using a fluid designed to withstand the rigors of heavy towing and elevated temperatures is vital for this vehicle. AMSOIL’s Signature Series and OE Fuel-Efficient transmission fluids are formulated to remain fluid even in sub-zero temperatures, providing reserve protection during heavy use. These fluids help prevent sludge buildup and ensure smooth shifting, allowing the vehicle to perform optimally whether on the highway or traversing rough terrain.
The cooling system of the G500 requires a capacity of 12.7 quarts of antifreeze and coolant. Maintaining the correct mixture is essential to prevent overheating and corrosion within the engine block and radiator. AMSOIL offers both a ready-to-use Passenger Car & Light Truck Antifreeze & Coolant and a Propylene Glycol concentration. The ready-to-use option is a 50/50 pre-mix that protects all cooling system metals, gaskets, and hoses, lasting up to 150,000 miles. The concentrated option allows for custom mixing and offers even longer protection, extending up to 1,000,000 miles in heavy-duty applications or 8 years. Both options are free of phosphates, nitrates, and other chemicals that can harm cooling systems, ensuring long-term reliability for your Mercedes-Benz.
Lubrication for the drivetrain is equally important for a vehicle of this caliber. The front differential requires 3 pints of gear lube, while the rear differential needs 3.8 pints. Both compartments utilize GLS44 specifications for all temperatures. AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube is the recommended choice for these differentials. This synthetic lube contains friction modifiers for limited-slip applications and is designed to control thermal runaway, which can occur in high-load scenarios. It also protects against rust and corrosion, helping to reduce operating temperatures and extending the life of the oil, seals, and equipment. This protection is crucial for maintaining the performance of the drivetrain in both on-road and off-road conditions.
Brake fluid and power steering fluid are often overlooked but are critical for safety and operation. The brake system requires DOT 4 plus fluid, and AMSOIL’s 100% Synthetic Brake Fluid meets these requirements while offering superior stability. It ensures consistent pedal feel and responsiveness for the ABS and traction control systems. For power steering, the vehicle requires a fluid compatible with the specific system design. The AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid is formulated to keep seals soft, preventing leaks, and resists heat for a long fluid life. It also offers excellent high-temperature performance and low-temperature fluidity, ensuring quiet and smooth steering operation in any weather.
About the Vehicle
The 2008 Mercedes-Benz G500 represents the pinnacle of luxury and off-road capability in the world of sport utility vehicles. Part of the iconic G-Class line, often referred to as the “G-Wagen,” this vehicle has a heritage that dates back to the late 1970s, originally developed for military and utility use before evolving into the luxury SUV seen today. The 2008 model year is equipped with a naturally aspirated 5.0-liter M113 V8 engine, which delivers a commanding presence and robust power delivery that has become a hallmark of the G-Class lineage.
Owners of this vehicle appreciate its legendary durability and off-road prowess. The G500 retains its boxy, utilitarian design, which provides excellent visibility and a high seating position. The solid front and rear axles, combined with a robust frame and advanced four-wheel-drive system, allow the vehicle to conquer challenging terrain with ease, making it a favorite among adventurers and enthusiasts who demand reliability in extreme environments. Despite its rugged reputation, the G500 offers a level of interior comfort and refinement that rivals many luxury sedans, featuring high-quality materials and advanced technology for its time.
The driving character of the 2008 G500 is defined by its smooth power delivery and substantial torque, characteristic of the M113 engine family. While it may not be the fastest SUV in terms of acceleration compared to modern turbocharged competitors, its linear power and mechanical feel provide a satisfying driving experience. The vehicle’s position in the market is unique, appealing to those who value versatility, status, and the ability to handle severe driving conditions without sacrificing comfort. The G500 is a vehicle that commands respect on the road and offers a sense of security and confidence in any situation, making it a popular choice for drivers who need a reliable companion for both daily commuting and weekend explorations.