Maintaining the performance and longevity of your 2009 Audi R8 with the 4.2L 8-cylinder engine requires precise fluid selection. The high-revving nature of this naturally aspirated powerplant, paired with its aluminum construction and precision engineering, demands lubricants that can handle extreme temperatures and high shear forces. Using the wrong viscosity or an oil that does not meet the specific Audi/Volkswagen quality standards can lead to increased wear, reduced fuel economy, and potential component failure. To ensure your vehicle receives the protection it was designed for, we have compiled a comprehensive guide to the recommended fluids and filters.
Recommended AMSOIL Products
- AMSOIL 5W-40 MS 100% Synthetic European Motor Oil – Engineered specifically for the demanding requirements of gasoline, diesel, and hybrid European vehicles, offering a precise blend of synthetic base oils and premium additives.
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – A versatile 100% synthetic option designed to meet European standards, providing exceptional protection against wear and thermal breakdown.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – Ideal for extreme cold climates or high-performance driving, this oil ensures rapid lubrication and superior cold-flow properties.
- MANN-FILTERS Oil Filter – Provides premium media filtration that offers improvements over original equipment manufacturer-branded filters to keep engine oil clean.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A 50/50 pre-mixed formulation that protects cooling system metals, gaskets, and hoses with a phosphate-free OAT technology.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option that must be mixed with distilled water, offering superior protection against corrosion and extended service life.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Reduces friction and helps seals remain soft to prevent leaks while resisting heat for long fluid life.
- AMSOIL 75W-90 Manual Transmission & Transaxle Gear Lube – Protects against increased heat and pressure with outstanding cold-flow properties and excellent high-temperature protection.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers excellent ABS and traction-control responsiveness with a stable viscosity over a wide temperature range.
- AMSOIL 75W-90 Long Life 100% Synthetic Gear Lube – Specially engineered for high-load gear protection, offering improved seal life and efficiency for the front differential.
- AMSOIL Gasoline Stabilizer – Keeps fuel fresh for up to 12 months and protects against varnish, gum buildup, and ethanol corrosion.
- AMSOIL Engine Fogging Oil – A highly effective rust preventive designed to protect internal engine components during storage or long periods of inactivity.
- AMSOIL P.i.® Performance Improver Gasoline Additive – Restores up to 14% horsepower and GDI fuel injectors to 100% flow rate after just one tank of fuel.
Engine Oil and Filter Specifications
The heart of your 2009 Audi R8 is the 4.2-liter V8 engine, often identified by the engine code BYH X. This high-performance unit operates at high RPMs and generates significant heat, necessitating a lubricant that maintains its viscosity under extreme stress. The recommended oil viscosity grades are 5W-40, 5W-30, 0W-40, or 0W-30, depending on the climate and driving conditions. It is critical that the oil you select meets the specific Audi and Volkswagen oil quality standards. If a synthetic oil meeting these standards is unavailable, a suitable viscosity grade for your local climate should be used to ensure proper lubrication during startup.
The total oil capacity for this vehicle, including a filter change, is 10.6 quarts. After refilling the system, it is essential to check the oil level to ensure it is within the safe operating range. When replacing the oil filter, the drain plug should be torqued to 7 ft-lbs to prevent leaks or damage to the drain plug threads. For the best protection, the AMSOIL 5W-40 MS 100% Synthetic European Motor Oil is an excellent choice. It features a European formula with a precise blend of synthetic base oils and premium additives designed for the unique demands of European vehicles.
Alternatively, the AMSOIL 5W-40 FS 100% Synthetic European Motor Oil and the AMSOIL 0W-40 FS 100% Synthetic European Motor Oil provide superior protection for both gasoline and diesel applications. These oils are formulated to handle the rigors of high-performance driving, offering extended engine life and improved fuel economy. Pairing your chosen AMSOIL MS 100% Synthetic European Motor Oil or AMSOIL FS 100% Synthetic European Motor Oil with the MANN-FILTERS Oil Filter ensures that contaminants are effectively trapped, keeping the oil clean and the engine running smoothly.
Cooling and Fluid Systems
A properly functioning cooling system is vital for an engine that runs at high temperatures. The 2009 Audi R8 requires a substantial amount of AMSOIL Passenger Car & Light Truck Antifreeze & Coolant, with a total capacity of 24.3 quarts. Maintaining the correct AMSOIL Propylene Glycol Antifreeze and Engine Coolant mixture prevents overheating, freezing, and corrosion within the aluminum cooling passages. For optimal protection, the AMSOIL Passenger Car & Light Truck Antifreeze & Coolant offers a unique poly-organic acid (OAT) formulation compatible with all cooling system metals, gaskets, and hoses. This ethylene glycol-based fluid is a 50/50 pre-mix, providing up to 150,000 miles or five years of protection.
If you prefer a concentrated formula, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant is an excellent choice. It requires mixing with distilled water and offers extended service intervals, potentially reaching 150,000 miles in passenger cars. This formulation is free from phosphates, nitrates, nitrites, silicates, borates, and amines, ensuring it won’t harm the cooling system components while protecting against rust and corrosion.
Steering and brake systems also require attention. The AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid reduces friction and helps maintain seal integrity, preventing leaks while resisting heat. For the braking system, the vehicle specification calls for Hydraulic AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid, DOT 4, compatible with P/N B 000 750 M3. The AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid provides excellent responsiveness for ABS and traction control systems, maintaining stability across a wide temperature range.
Transmission and Differential Lubrication
For models equipped with a manual transmission, proper lubrication is crucial for smooth shifting and component longevity. The transmission fluid capacity is 7.4 pints, though this can vary depending on the equipment. With a transmission cooler, the full capacity is 8.5 pints, while the empty capacity is 1.9 pints. The drain and fill plugs should be torqued to 37 ft-lbs. The AMSOIL 75W-90 Manual Transmission & Transaxle Gear Lube is friction-modified to protect brass synchronizers and offers outstanding cold-flow properties.
The front differential requires specific gear lubrication. The capacity for the front differential is 2.7 pints. To protect these high-load gears, the AMSOIL 75W-90 Long Life 100% Synthetic Gear Lube is recommended. This fluid is engineered for high-load gear and bearing protection, resisting rust and corrosion while extending seal life and improving efficiency.
Maintenance for Storage and Fuel System Health
Even for a high-performance vehicle, periods of storage can occur. To protect the engine during these times, the AMSOIL Engine Fogging Oil can be used to coat internal components, preventing rust and corrosion. For fuel system maintenance, the AMSOIL P.i.® Performance Improver Gasoline Additive helps restore fuel injectors to 100% flow rate, improves fuel economy, and reduces pre-ignition knock. If the vehicle will be stored for an extended period, the AMSOIL Gasoline Stabilizer ensures the fuel remains fresh and prevents gum and varnish buildup.
About the 2009 Audi R8
The 2009 Audi R8 stands as a testament to the manufacturer’s commitment to engineering excellence and performance. As a mid-engine sports car, the R8 introduced a new era of daily-drivable supercars that bridged the gap between track-day intensity and street comfort. The specific model year features the 4.2-liter V8 engine, a naturally aspirated powerhouse known for its high-revving nature and distinctive exhaust note. Unlike its later V10 and V10 Turbo variants, the 4.2-liter engine delivers a smooth, linear power curve that rewards the driver with precise throttle control.
Based on the Volkswagen Group’s premium platforms, the R8 shares technical DNA with other high-performance vehicles of the era while maintaining its own unique identity. The interior is designed with a driver-centric approach, featuring high-quality materials and ergonomics that prioritize the driving experience. The exterior design, often characterized by its “shark skin” side blades and aggressive stance, has become an iconic look in the automotive world. Owners of the 2009 Audi R8 appreciate the balance of power, handling, and build quality that the vehicle offers, making it a sought-after classic in the sports car community.
Whether you are driving on winding mountain roads, commuting through the city, or attending car shows, maintaining the proper lubrication levels is essential for preserving the vehicle’s performance and value. By adhering to the recommended fluid specifications and utilizing high-quality synthetic products, owners can ensure their 2009 Audi R8 continues to perform at its peak for years to come.