The 2007 Audi A4 Quattro with the 3.2L V6 (Engine Code BKH) is a sophisticated piece of engineering that demands fluids meeting precise European standards. Maintaining this vehicle requires more than just standard oil; it requires lubricants designed to handle the high operating temperatures and tight tolerances of Audi’s powertrain. Using the correct fluids ensures optimal performance, extends component life, and preserves the vehicle’s reputation for dynamic driving characteristics.
Recommended AMSOIL Products
- AMSOIL 5W-40 MS 100% Synthetic European Motor Oil – Specifically designed for the unique demands of gasoline and hybrid European vehicles, this oil features a precise blend of synthetic base oils and premium additives.
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – Another top-tier choice for this Audi, offering extensive protection and performance for gasoline, diesel, and hybrid European vehicles.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – Ideal for extreme temperature performance, this viscosity grade provides excellent cold-start protection while maintaining stability at high heat.
- WIX Oil Filter – A premium filtration option featuring media that offers improvements over original equipment manufacturer-branded filters to ensure engine cleanliness.
- MANN-FILTERS Air Filters – High-quality filtration for the engine intake, featuring premium media to improve upon OEM-branded air filters for better airflow and cleanliness.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A poly-organic acid (OAT) formulation that protects all cooling system metals, gaskets, and hoses while providing up to 150,000 miles of protection.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option that requires mixing with distilled water, offering protection up to 150,000 miles or 5 years and greatly surpassing standards for metallic corrosion.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Engineered to withstand 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 protection against wear for automatic transmissions, ensuring smooth operation.
- AMSOIL 75W-90 Manual Transmission & Transaxle Gear Lube – Offers outstanding cold-flow properties and protects brass synchronizers while inhibiting rust and corrosion.
- 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 75W-90 Long Life 100% Synthetic Gear Lube – Specifically engineered for extended service life, providing high-load gear and bearing protection with better cold-weather shifting.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Reduces friction, helps seals remain soft to prevent leaks, and resists heat for long fluid life.
Engine Oil and Filtration Essentials
The heart of your 2007 Audi A4 Quattro is the 3.2L V6 engine, identified by the engine code BKH. This DOHC (Dual Overhead Cam) powerplant requires motor oil that adheres to strict Audi and Volkswagen oil quality standards. The capacity for this engine is 6.9 quarts when changing the oil and replacing the filter. After refilling, it is crucial to check the oil level to ensure proper lubrication. The oil drain plug should be torqued to 22 ft/lbs to prevent leaks or stripping the threads.
For this application, you have three excellent viscosity options depending on your local climate and driving conditions: 5W-40 MS, 5W-40 FS, or 0W-40 FS. All three are 100% synthetic formulations designed specifically for European vehicles. If the specific oil meeting the required quality standard is not available in your area, you should select a viscosity grade suitable for your local climate and operating conditions. These AMSOIL European motor oils feature a precise blend of synthetic base oils and premium additives, ensuring the engine remains clean and protected against wear even under high-stress driving.
Complementary to the oil is the filtration system. The WIX Oil Filter is recommended to ensure that the synthetic oil remains clean throughout its service interval. Additionally, the MANN-FILTERS Air Filter provides a crucial barrier against contaminants, protecting the engine intake with premium media that outperforms standard OEM filters. A clean engine breathes better, leading to improved efficiency and longevity.
Cooling and Fluid Systems
Maintaining the correct thermal balance is vital for the longevity of the 2007 Audi A4 Quattro. The cooling system has a capacity of 9.5 quarts. For optimal performance, owners can choose between AMSOIL’s Passenger Car & Light Truck Antifreeze & Coolant or the concentrated Propylene Glycol Antifreeze and Engine Coolant. Both are formulated to be phosphate, nitrate, nitrite, silicate, borate, and amine-free, which is beneficial for the various metals and materials found in the cooling system. The ethylene glycol pre-mix formulation protects all cooling system metals, gaskets, and hoses, while the propylene glycol version offers even higher service intervals and superior protection against corrosion and erosion.
The transmission system also requires specialized attention. The 09L automatic transmission holds an initial fill capacity of 8.5 quarts. For this, AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid or the OE Fuel-Efficient version are ideal. These fluids remain fluid in sub-zero temperatures and provide reserve protection during heavy use, ensuring the transmission shifts smoothly.
If your vehicle is equipped with a manual transmission (02X), the capacity is 7.4 pints. The fill and drain plugs should be torqued to 33 ft/lbs. For this system, AMSOIL 75W-90 Manual Transmission & Transaxle Gear Lube is recommended, offering friction-modified protection that safeguards brass synchronizers and provides excellent cold-flow properties.
The A4 Quattro’s all-wheel-drive system includes a transfer case (1.7 pints capacity) and front (2.3 pints) and rear (1.9 pints with OAR) differentials. These components require a high-performance AMSOIL 75W-90 Long Life 100% Synthetic Gear Lube to handle the high loads. This gear lube is specifically designed for this purpose, offering protection from rust and corrosion and improved seal life.
Finally, brake and power steering systems benefit from synthetic upgrades. The hydraulic AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid should be flushed to ensure stable viscosity and responsiveness. For the power steering system (PS046), the AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid helps seals remain soft to prevent leaks while resisting heat for long fluid life.
About the Vehicle
The 2007 Audi A4 Quattro represents a significant generation of Audi’s mid-size luxury sedan lineup, built on the V6 (B6) platform that had been in production since the late 1990s. This specific iteration features the BKH engine, a 3.2-liter V6 that produces a robust amount of power for its class, offering a smooth and refined driving experience that complements the sophisticated Quattro all-wheel-drive system. The Quattro system is renowned for its ability to distribute power between the front and rear axles with precision, providing excellent traction in wet, snowy, or slippery conditions without sacrificing the sporty handling dynamics that Audi is famous for.
Owners of the 2007 A4 Quattro typically appreciate the vehicle’s blend of luxury, performance, and practicality. The sedan’s interior design focuses on driver-centric ergonomics, with high-quality materials and a layout that emphasizes functionality. Under the hood, the naturally aspirated V6 is known for its smooth power delivery, making it a favorite among enthusiasts who prefer linear acceleration over the turbocharged variants found in other models. However, the age of this vehicle means that regular maintenance is paramount to keeping it running like new. As the miles accumulate, components that rely on fluid integrity, such as the seals and gaskets, can become more susceptible to wear.
One of the common issues owners encounter with this model as it ages involves oil consumption and seal degradation. The synthetic oils designed for European vehicles can help condition seals, keeping them supple and preventing leaks that are often experienced with traditional mineral oils in older engines. Additionally, the transmission and differential fluids can break down over time, leading to harsh shifting or increased noise in the transfer case. Switching to high-performance synthetic fluids can significantly reduce these symptoms, extending the life of the drivetrain components. Another frequent concern is the cooling system, where older antifreeze can lose its protective properties, leading to corrosion or overheating. Regular fluid changes with long-life antifreeze are essential to prevent expensive cooling system repairs. By using the correct AMSOIL products, owners can address these common wear points, ensuring that their 2007 A4 Quattro remains a reliable and enjoyable daily driver for years to come.