The 2008 Volkswagen Touareg with the 4.2L V8 engine (Engine Code BAR R) is a sophisticated piece of engineering designed for both on-road luxury and serious off-road capability. This powerful SUV places significant demands on its powertrain, particularly in terms of heat management and lubrication stability under load. Ensuring the correct fluids are used is critical for maintaining the engine’s longevity, optimizing fuel efficiency, and preserving the precise shifting characteristics of the automatic transmission. Using high-quality synthetic lubricants formulated for European vehicles can provide superior protection compared to conventional oils, especially during extreme temperature fluctuations or when towing.
Recommended AMSOIL Products
To maintain the performance of your 2008 Volkswagen Touareg 4.2L, we recommend the following AMSOIL fluids and filters specifically designed to meet or exceed the vehicle manufacturer’s requirements:
- AMSOIL 5W-40 MS 100% Synthetic European Motor Oil – A premium European formula featuring a precise blend of synthetic base oils and additives designed for the unique demands of gasoline, diesel, and hybrid European vehicles.
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – Engineered for extreme temperature performance, this oil offers exceptional shear stability and deposit control for long-lasting engine protection.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – Ideal for vehicles requiring lower viscosity for cold-start protection while maintaining high-temperature stability under heavy load.
- MANN-FILTERS Oil Filter – Features premium filtration media that improves upon original equipment manufacturer (OEM) standards to keep engine oil clean and flowing freely.
- MANN-FILTERS Air Filters – Provides superior airflow and filtration efficiency to ensure the engine breathes easily and operates at peak performance.
When performing a fluid service on this powerful 8-cylinder engine, attention to capacity is essential. The oil pan on the 4.2L V8 requires a total fill of 9.6 quarts when including a filter change. To ensure accuracy during the refill process, it is recommended to add 0.5 liters (approximately 0.5 quarts) less than the total capacity initially, start the engine, and allow it to run until it reaches operating temperature. After checking the oil level, top off as necessary to reach the proper mark on the dipstick. Always replace the oil drain plug with a new one upon removal and tighten it to the specified torque of 22 ft/lbs to prevent leaks. Maintaining these specific intervals and capacities helps ensure that the engine remains properly lubricated and protected against wear.
Transmission and Drivetrain Fluids
The 2008 Touareg 4.2L is equipped with a 6-speed automatic transmission (model 09D) that requires a specific fluid to handle the vehicle’s weight and torque output. Proper transmission fluid is vital for preventing wear, sludge buildup, and temperature-related failures. For the 09D transmission, a total fill requires 9.5 quarts. We recommend using AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid, which is designed to withstand the rigors of heavy towing and elevated temperatures while remaining fluid in sub-zero conditions. Alternatively, the AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid offers excellent cold-weather performance and promotes smooth, shudder-free shifts.
The differential and transfer case also require high-quality lubrication to ensure smooth operation across various terrain types. For the front differential (0AA), the capacity is 2.1 pints. For the rear differential with an open locking diff (GLSC8), the capacity is 2.6 pints. Both applications benefit from AMSOIL 75W-90 Long Life 100% Synthetic Gear Lube. This lubricant is specifically engineered for high-load gear and bearing protection, offering improved seal life and better cold-weather shifting capabilities compared to traditional gear oils.
Cooling System and Brake Fluid
Maintaining the cooling system is crucial for the 4.2L engine, which generates significant heat. The cooling system capacity for this vehicle is 10.6 quarts. Owners have the choice between the AMSOIL Passenger Car & Light Truck Antifreeze & Coolant, which is a unique ethylene glycol 50/50 pre-mix formulation that protects cooling system metals and hoses for up to 150,000 miles. For those preferring a concentrate, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers extended service life up to 150,000 miles or 5 years and greatly surpasses standards for metallic corrosion protection.
Brake performance should never be compromised. The 2008 Touareg uses hydraulic brake fluid meeting DOT 3 and DOT 4 standards. Using AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid ensures excellent ABS and traction-control responsiveness while providing a stable viscosity over a wide temperature range, which is essential for safe stopping power.
Additional Fluids and Maintenance Products
For the power steering system (PS046), maintaining fluid quality helps seals remain soft and reduces friction. The AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid provides strong anti-wear protection and excellent high-temperature performance for quiet operation. To further protect the engine and fuel system, the AMSOIL P.i. Performance Improver is highly recommended. This additive restores fuel injectors to 100% flow rate after just one tank of fuel and helps restore up to 14% of lost horsepower.
About the Vehicle
The 2008 Volkswagen Touareg occupies a unique space in the automotive market as a luxury performance SUV that seamlessly blends the ruggedness of an off-roader with the comfort of a high-end sedan. Produced on the same platform as the Porsche Cayenne and Audi Q7, the Touareg shares a reputation for robust construction and advanced engineering. The 4.2L V8 engine, identified as the BAR R in this model year, is a naturally aspirated powerhouse known for delivering smooth, linear power and a distinctively refined driving character.
Originally developed as a joint venture between Volkswagen and Porsche, the Touareg represents a commitment to durability and versatility. It was designed to tackle challenging off-road conditions while providing a luxurious interior and quiet cabin for highway cruising. The vehicle’s suspension system and four-wheel-drive capabilities are engineered to handle a wide variety of terrains, making it a favorite among owners who demand both capability and sophistication. With its reputation for longevity and strong resale value, the Touareg is often cited as one of the most reliable luxury SUVs of its era. However, like any vehicle with such complex systems and high-performance potential, it requires diligent maintenance to keep it running at its best. Proper lubrication of the engine, transmission, and differentials is the foundation of keeping this German-engineered machine in peak condition for years to come.
Whether you are extending the interval between oil changes or simply want to ensure your vehicle is protected against extreme wear, using the recommended AMSOIL fluids provides a level of performance that exceeds the highest industry standards. These products are rigorously tested to handle the specific thermal and shear stresses placed on the 2008 Touareg’s components. By selecting the right fluids for your specific driving conditions, you can maximize the lifespan of your vehicle and enjoy a more responsive, reliable driving experience.
Vehicle History and Performance
The Volkswagen Touareg made its debut in the early 2000s, aiming to fill a niche for a large, capable SUV that didn’t sacrifice on-road manners for off-road grit. The second generation, which includes the 2008 model, solidified the vehicle’s position as a flagship for the brand. The 4.2L V8 engine option was particularly popular for its balance of torque and efficiency. Owners of the Touareg often praise its towing capacity and stability, traits inherited from its Porsche partnership. The vehicle’s all-wheel-drive system, known as the permanent 4Motion system, actively distributes power between the front and rear axles, ensuring traction in diverse conditions. Over the years, the Touareg has maintained a strong following due to its build quality and the extensive parts and service network available for it. While it shares many mechanical components with its platform siblings, the Touareg distinguishes itself with a focus on family utility and premium comfort. This combination of luxury, safety, and capability has kept the Touareg relevant in a segment dominated by both traditional SUVs and crossovers.