The 2022 Audi S4, powered by its sophisticated 3.0L V6 turbocharged engine (Engine Code CWGD), demands precision maintenance to ensure the longevity of its high-performance components. The engine is equipped with an Audi-specific synthetic requirement that necessitates a precise 0W-20 viscosity grade to maintain optimal oil flow under the high thermal stress generated by the turbocharger and the aggressive tuning of the S4 powertrain. Using a lubricant that meets the exact Audi and Volkswagen oil quality standards is not just a recommendation; it is a necessity to prevent sludge buildup and ensure the variable valve timing and turbo bearings operate within tight tolerances. Beyond the engine, the vehicle’s Quattro all-wheel-drive system, high-performance brakes, and sealed cooling loops require specialized fluids to handle the unique thermal loads and chemical interactions found in German luxury performance sedans.
Recommended AMSOIL Products
To maintain the factory performance specifications while extending service intervals and maximizing protection, the following AMSOIL products are recommended for the 2022 Audi S4:
- AMSOIL 0W-20 LS-VW 100% Synthetic European Motor Oil – A premium formulation designed specifically for the precise demands of European engines, meeting the strict Audi/VW standards required for the CWGD turbo engine.
- MANN-FILTERS Oil Filter – A high-efficiency filtration component that captures contaminants more effectively than standard OEM filters, ensuring clean oil circulation for the high-stress turbocharger and engine internals.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid (OAT) formulation that protects cooling system metals and gaskets for up to 150,000 miles, ideal for the vehicle’s aluminum engine block.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option for owners who prefer to mix their own coolant to exact specifications, offering superior heat transfer and corrosion protection.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Provides exceptional protection against the heat and wear associated with the 8-speed automatic transmission, even under heavy towing or spirited driving.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – A cost-effective yet high-performance alternative that meets the required OEM standards for the vehicle’s automatic transmission.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – Essential for the rear differential and transfer case, this fluid controls thermal runaway and protects limited-slip components from wear in the Quattro system.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Ensures stable viscosity and excellent ABS responsiveness, handling the high temperatures generated by the S4’s performance braking system without boiling.
The engine of the 2022 Audi S4 operates in a demanding environment. The 3.0L supercharged engine variant is often compared, but the S4 in this model year typically features a supercharged or turbocharged layout depending on the specific market and exact sub-model, though the CWGD engine code indicates a turbocharged configuration requiring 0W-20 viscosity. The capacity for this engine is approximately 7.7 quarts when including the oil filter replacement. It is critical to select a viscosity that balances cold-start flow with high-temperature film strength. The recommended AMSOIL 0W-20 synthetic oil meets the specific Audi and Volkswagen oil quality standards, ensuring that the oil pump and bearing clearances are protected regardless of whether the vehicle is subjected to the stress of a turbocharger or extreme ambient temperatures. If the specific synthetic oil is not available, a grade suitable for the local climate is recommended, but the European formula of the LS-VW product ensures compatibility with the vehicle’s complex emissions and lubrication systems.
Moving beyond the engine, the transmission fluid plays a pivotal role in the driving dynamics of this vehicle. The 2022 Audi S4 is equipped with an 8-speed automatic transmission that requires specific fill capacities, often ranging from an initial fill of 3.8 quarts to a total fill of roughly 9.1 quarts, though actual capacity can vary between 3.6L and 4.0L. The fluid must withstand elevated temperatures generated during aggressive acceleration and the repeated shifting cycles inherent to the S4’s performance character. AMSOIL’s fuel-efficient transmission fluids remain fluid in sub-zero temperatures while providing a robust film strength to prevent wear during heavy use. This protection extends the life of the transmission and ensures smooth power delivery from the V6 engine to the wheels.
The cooling system is another critical area where fluid quality matters significantly. The 2022 Audi S4 holds approximately 10.6 quarts of coolant. The vehicle’s cooling system utilizes specialized metals and gaskets that require a phosphate-, nitrate-, nitrite-, silicate-, borate-, and amine-free formulation to prevent degradation over time. The AMSOIL Antifreeze and Coolant products use a unique OAT formulation that protects all cooling system metals, gaskets, and hoses. Whether using the pre-mixed ethylene glycol version or the concentrated propylene glycol option, the coolant provides extended service life, up to 150,000 miles or 5 years, ensuring the engine does not overheat under the thermal load of performance driving.
The Quattro all-wheel-drive system relies on the integrity of its differential and transfer case fluids. The rear differential typically requires a small capacity, often cited as 2.1 pints or 1.5 pints depending on the specific rear differential code (0D3 or 0DB). These gears operate under high torque loads and can generate significant heat. AMSOIL SEVERE GEAR® 75W-90 synthetic gear lube contains friction modifiers for limited-slip applications and helps reduce operating temperatures. It controls thermal runaway, a common issue in high-performance differentials, and protects against rust and corrosion. This ensures that the all-wheel-drive system continues to distribute power effectively and quietly for years.
Finally, the brake system on a performance sedan like the S4 must remain reliable under repeated heavy use. The brake fluid absorbs moisture over time, which lowers its boiling point and can lead to brake fade. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid offers excellent ABS and traction-control responsiveness by maintaining stable viscosity over a wide temperature range. This prevents the fluid from boiling even during aggressive cornering or track use, providing a solid pedal feel and consistent stopping power.
About the Vehicle
The 2022 Audi S4 represents a pinnacle of the German engineering tradition, combining everyday usability with sports car performance. Part of the Audi lineup that sits between the standard A4 and the high-end RS4, the S4 is renowned for its balanced chassis and potent powertrain. The 2022 model year continues the legacy of the B9 generation platform, a modular architecture designed to offer a blend of lightweight construction and structural rigidity. This specific model year features the 3.0-liter V6 engine, which in the S4 typically produces a robust 349 to 354 horsepower depending on the market specifications, paired with an 8-speed tiptronic automatic transmission. This powertrain setup is renowned for its linear power delivery and the seamless acceleration provided by the supercharger or turbocharger, depending on the specific engine calibration and market region.
Owners of the 2022 Audi S4 often appreciate the vehicle’s dual nature; it is capable of serving as a comfortable, quiet cruiser for daily commutes while transforming into a capable performance sedan when the road opens up. The Quattro all-wheel-drive system is a hallmark of the brand, providing exceptional traction in various weather conditions, which makes the S4 a versatile choice for a wide range of driving environments. The interior typically features premium materials, advanced technology, and driver-assistance features that align with the luxury segment expectations. The sedan’s handling is sharp, thanks to its precise steering and well-tuned suspension, which allows it to navigate winding roads with confidence while maintaining comfort on the highway.
Like many high-performance vehicles, the S4 does have known areas where maintenance can influence long-term reliability. One common issue found in Audi vehicles of this era relates to timing chain tensioners and guides. Over time, the tensioners can wear or fail, leading to timing chain slap or, in severe cases, timing issues. Using high-quality synthetic oils that maintain their film strength and flow characteristics can help lubricate these components more effectively and reduce the wear associated with cold starts. Additionally, the water pump in some Audi models is known to be a point of failure, often failing around higher mileage marks. The use of high-performance antifreeze can help mitigate corrosion and sediment buildup that might contribute to pump failure, potentially extending the service life of the cooling system components.
Another area of concern for S4 owners involves the direct injection system. Direct injection engines can be prone to carbon buildup on the intake valves, as fuel is injected directly into the combustion chamber rather than onto the intake valves to clean them. This carbon buildup can restrict airflow and reduce engine efficiency over time. Regular use of fuel additives like AMSOIL P.i. Performance Improver can help clean injectors and reduce carbon deposits, maintaining fuel economy and engine response. Furthermore, the dual-clutch or automatic transmissions in these vehicles can sometimes exhibit shuddering or harsh shifts if the fluid degrades. Synthetic transmission fluids that meet the rigorous OEM standards can help smooth out these shifts and protect the delicate clutch packs and solenoids within the transmission. Finally, oil consumption can be a minor issue in some high-strung V6 engines; high-quality synthetic motor oils formulated for European vehicles help control consumption and protect the engine rings and cylinder walls from excessive wear.
The 2022 Audi S4 remains a favorite among driving enthusiasts who demand a vehicle that can handle the daily grind without sacrificing performance. By adhering to strict maintenance schedules and using the recommended synthetic lubricants, owners can ensure that their S4 continues to deliver the smooth, responsive, and powerful driving experience that the Audi brand is famous for. The combination of a well-tuned V6 engine, intelligent all-wheel drive, and sophisticated engineering makes this vehicle a standout in the luxury sedan segment.