Maintaining the 2018 Audi A8 Quattro with a 3.0L turbocharged V6 requires more than just a routine oil change; it demands a precise selection of lubricants that meet the stringent demands of German engineering. This luxury sedan, equipped with the CREC engine code, operates at high temperatures and pressures, making the choice of synthetic fluid critical for longevity. Using the correct viscosity and fluid specifications ensures that the engine, transmission, and drivetrain components receive the protection they need to perform reliably under both daily commuting and high-performance driving conditions.
Recommended AMSOIL Products
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – A premium synthetic formulated specifically for the exacting standards of European vehicles, providing superior wear protection and thermal stability for the Audi A8.
- AMSOIL 5W-40 MS 100% Synthetic European Motor Oil – An extended-life synthetic option that offers robust protection for European gasoline, diesel, and hybrid engines, ensuring smooth operation in all temperatures.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – Ideal for extreme cold weather starts while maintaining high-temperature protection, this synthetic oil is designed to meet specific Audi and Volkswagen oil quality standards.
- WIX Oil Filter – Features premium media that offers improvements over original equipment manufacturer (OEM)-branded filters, ensuring maximum oil flow and contaminant capture for your engine.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid (OAT) formulation that protects all cooling system metals, gaskets, and hoses for up to 150,000 miles or 5 years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated formula requiring mixing with distilled water, offering outstanding corrosion protection and extended service intervals for high-performance applications.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands the rigors of heavy towing and elevated temperatures while remaining fluid in sub-zero conditions to protect the 8-speed transmission.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Provides excellent protection against wear and maintains fluidity to ensure smooth shifting and transmission longevity.
- AMSOIL 75W-90 Long Life 100% Synthetic Gear Lube – Specifically engineered for high-load gear and bearing protection, offering better cold-weather shifting and improved seal life in the differential.
- 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 for superior stopping power.
Engine oil is the lifeblood of the 2018 Audi A8’s 3.0L V6 turbocharged engine. The CREC engine operates at higher temperatures than naturally aspirated counterparts, requiring an oil that resists thermal breakdown and maintains viscosity under stress. The recommended AMSOIL 5W-40 FS 100% Synthetic European Motor Oil, AMSOIL 5W-40 MS 100% Synthetic European Motor Oil, or AMSOIL 0W-40 FS 100% Synthetic European Motor Oil are engineered with a precise blend of synthetic base oils and premium additives to meet the specific Audi and Volkswagen oil quality standards required by this vehicle. Each provides the necessary film strength to protect critical components like the turbocharger bearings and camshafts. The oil capacity for the 2018 Audi A8 Quattro with the CREC engine is 7.2 quarts when changing the WIX Oil Filter. After refilling, it is crucial to check the oil level to ensure proper lubrication, and the drain plug should be torqued to 22 ft-lbs with a new seal.
Keeping the cooling system in peak condition is equally vital for the longevity of the A8. With a capacity of 15.9 quarts, the cooling system is substantial, and using a high-performance AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is necessary to prevent overheating and corrosion. This antifreeze is an ethylene glycol 50/50 pre-mix formulation that is phosphate, nitrate, nitrite, silicate, borate, and amine-free, making it compatible with all other coolant colors. Alternatively, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers a concentrated solution that can be mixed to exact specifications, providing extended protection against metallic corrosion and erosion. These coolants are designed to protect all cooling system metals, gaskets, and hoses, ensuring the engine operates within its optimal temperature range even under the heavy load of the Quattro drivetrain.
The 2018 A8 Quattro is powered by an 8-speed automatic transmission that demands a fluid capable of handling rapid shifts and high torque. The transmission fluid capacity varies between an initial fill of approximately 3.8 quarts (3.6-4.0L) and a total fill of 9.1 quarts for the 8-speed unit. AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid is designed to withstand the rigors of the A8’s transmission, remaining fluid in sub-zero temperatures while providing reserve protection during heavy use. For those seeking a OE-compatible alternative that still offers synthetic superiority, the AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid provides excellent protection against wear and ensures smooth power delivery. Both fluids are engineered to prevent sludge and temperature-related problems, giving you confidence in the vehicle’s drivability.
The all-wheel-drive system of the A8 Quattro relies on efficient gear lubrication in the front and rear differentials to distribute power smoothly. Each differential, whether front or rear with the 0BK option, has a capacity of 1.9 pints. AMSOIL 75W-90 Long Life 100% Synthetic Gear Lube is specifically engineered to handle the high loads placed on the differential gears and bearings. It offers better cold-weather shifting, improved efficiency, and enhanced seal life, which is crucial for maintaining the integrity of the Quattro system over the long term. This synthetic gear lube also provides superior protection from rust and corrosion, ensuring that the drivetrain components remain free from degradation.
Brake safety cannot be compromised in a vehicle of this caliber. The 2018 Audi A8 requires a hydraulic AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid that meets DOT 3 and DOT 4 standards. This brake fluid provides excellent responsiveness for the ABS and traction-control systems. Its stable viscosity over a wide temperature range ensures consistent braking performance, whether you are driving in the summer heat or the winter cold. Regularly flushing and replacing the brake fluid with a synthetic alternative helps maintain the precision of the braking system and prevents moisture buildup that can lead to corrosion within the lines and calipers.
Model History and Performance
The 2018 Audi A8 Quattro represents the pinnacle of the luxury sedan segment, offering a blend of advanced technology, exceptional comfort, and dynamic performance. Based on the MLB (Modular Longitudinal) platform, the A8 is known for its lightweight aluminum spaceframe construction, which contributes to its agile handling despite its substantial size. This generation of the A8, particularly the 3.0L V6 model, is driven by a 3.0-liter turbocharged engine that delivers robust power and torque, making it a capable choice for highway cruising and spirited driving alike.
Owners of the A8 Quattro appreciate its smooth ride quality, which is often attributed to the optional air suspension and the sophisticated Quattro all-wheel-drive system. This system provides superior traction in various weather conditions, making the vehicle a reliable year-round companion. The interior of the A8 is a sanctuary of luxury, featuring high-quality materials, advanced infotainment systems, and a focus on passenger comfort that rivals top-tier competitors in the market.
While the A8 is a highly reliable vehicle, like any complex machine, it benefits from the use of high-quality lubricants to mitigate potential issues. One common area of concern for owners of modern turbocharged engines is the buildup of carbon deposits on the intake valves and fuel injectors, which can lead to reduced performance and increased fuel consumption. The use of AMSOIL P.i. Performance Improver can help restore fuel injectors and prevent carbon buildup, maintaining engine efficiency over time.
Another potential issue involves the cooling system, where corrosion or coolant degradation can lead to overheating or leaks, particularly in older vehicles. Using AMSOIL Propylene Glycol Antifreeze and Engine Coolant can help prevent these issues by offering superior corrosion protection and extending the life of the cooling system components. Additionally, the oil pan drain plug on many vehicles can become damaged over time due to repeated changes. Ensuring that the drain plug is properly torqued and that the oil filter is of high quality, such as the WIX Oil Filter, can prevent leaks and ensure that the oil is effectively filtered to protect the engine’s internal components. Finally, the brake system, especially the calipers and lines, can suffer from fluid contamination or moisture absorption, which AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid can effectively combat to ensure safe and responsive braking performance.
In summary, the 2018 Audi A8 Quattro with the 3.0L engine is a sophisticated vehicle that rewards proper maintenance with reliability and performance. By selecting the correct AMSOIL fluids and filters, owners can ensure that their vehicle continues to operate at its best, protecting the investment and enjoying the full potential of this luxury sedan.