What Type of Oil Does a 2018 Audi S4 Take?

The 2018 Audi S4 typically requires full synthetic engine oil that meets VW 502 00 or VW 504 00 specifications, most commonly in 0W-40 or 5W-40 viscosity, with a capacity of about 7.2 quarts (6.8 liters) including the filter. This choice of oil is essential to protect the 3.0-liter turbocharged V6 engine and to maintain warranty and long-term reliability.

The Official Oil Requirements for the 2018 Audi S4

The 2018 Audi S4 (B9 generation) uses a 3.0L TFSI turbocharged V6 (engine code CWG/EA839). Audi and Volkswagen specify precise oil standards for this engine, and following them is more important than any single brand name on the bottle.

Manufacturer Specifications

The primary requirement is that the engine oil must meet Audi/VW’s own approval standards. These standards focus on high-temperature stability, resistance to sludge, and compatibility with modern emissions systems.

The following list outlines the key oil specifications and what they mean for an owner of a 2018 Audi S4.

• VW 502 00: The most common approval for gasoline Audi engines of this era; suitable for normal and spirited driving, with strong protection against deposits.
• VW 504 00: A newer, low-ash, long-life specification designed to work with modern emissions systems and extended drain intervals; often used in Europe and also acceptable in many North American markets if available.
• Full synthetic only: The oil must be a fully synthetic formulation; conventional or semi-synthetic oils do not meet the performance and protection levels required.
• API / ACEA overlap: Some oils also carry API SP/SN+ and ACEA A3/B4 ratings, but these are secondary; the VW spec is the deciding factor.

In practical terms, any full synthetic oil explicitly labeled as meeting VW 502 00 or VW 504 00 is considered suitable for the 2018 S4’s engine, and owners should always verify this approval on the bottle label or manufacturer’s data sheet.

Recommended Viscosity Grades

Audi’s owner’s manuals provide a viscosity chart based on ambient temperature, but for most owners in North America and Europe, a few viscosity grades are typically recommended.

The following list highlights the most common viscosity options for a 2018 Audi S4 and how to choose between them.

• 0W-40: Provides excellent cold-start performance and strong high-temperature protection; a popular year-round choice, especially in colder climates.
• 5W-40: Another common year-round grade, widely available and suitable for moderate to hot climates.
• 0W-30 / 5W-30 (VW 504 00 oils): Sometimes specified for fuel economy and long-life service intervals, particularly in markets where VW 504 00 oils are standard. Must still carry a VW approval.
• Climate considerations: Colder regions benefit more from 0W oils for quicker lubrication at startup; very hot regions may favor 5W-40 for slightly thicker protection at high temperatures.

Ultimately, choosing between 0W-40, 5W-40, or an approved 0W-30/5W-30 should be based on climate, driving style, and strict adherence to the Audi/VW oil approvals printed on the product.

Oil Capacity and Change Intervals

Beyond oil type, correct quantity and change timing are essential to keep the S4’s turbocharged V6 operating reliably, especially under performance driving conditions.

Oil Capacity

The 2018 Audi S4 has a relatively large oil capacity for a V6 engine, which helps with temperature control and durability under load.

The next list outlines the typical oil volume figures an owner or technician needs to know.

• Approximate capacity with filter: About 7.2 quarts (6.8 liters).
• Without filter: Slightly less, but oil should always be changed with the filter to maintain protection.
• Check by dipstick/MMI: Always confirm final level using the vehicle’s level reading (dipstick if equipped or MMI/virtual cockpit oil-level display) after the engine has been run briefly and allowed to settle.
• Do not overfill: Overfilling can cause foaming, catalytic converter issues, and potential engine damage.

These figures provide a practical target when refilling, but fine adjustment should always be made using the car’s own oil-level measurement rather than relying solely on a fixed volume.

Recommended Change Intervals

Audi markets extended service intervals, but real-world use—especially with a performance sedan like the S4—often calls for more cautious maintenance.

The following list summarizes typical oil-change practices for a 2018 Audi S4 under different driving conditions.

• Manufacturer interval (many markets): Up to around 10,000 miles (16,000 km) or 12 months, whichever comes first, when using an approved long-life oil.
• Enthusiast / severe-use interval: Many owners and independent specialists recommend 5,000–7,500 miles (8,000–12,000 km), especially with frequent short trips, track use, or aggressive driving.
• Warm-up and turbo care: Allowing the engine to warm up gently and avoiding hard acceleration when cold helps reduce oil stress and contamination.
• Oil monitoring: Checking level periodically between changes is important, as some turbocharged engines may consume small amounts of oil over time.

Adopting conservative intervals and good warm-up habits typically gives the best balance of protection and cost for owners who plan to keep their S4 long-term.

Examples of Suitable Oils on the Market

While Audi-branded oil is one option, many major oil manufacturers produce fully synthetic lubricants that meet the necessary VW approvals and are widely available through auto parts stores and dealers.

Commonly Used Brands and Products

For owners who prefer specific brands, several products are frequently used by Audi S4 drivers and independent shops, as long as they show the correct VW approval on the label.

The following list provides representative examples of oils that often meet VW 502 00 or 504 00, though availability and formulations may vary by region and over time.

• Castrol Edge / Edge Euro 0W-40 or 5W-40: Many variants are VW 502 00-approved and widely sold in North America and Europe.
• Mobil 1 FS 0W-40 (often labeled “European Car Formula” or similar): Commonly carries VW 502 00 approval and is a popular all-around choice.
• Liqui Moly Top Tec or Leichtlauf series (0W-40, 5W-40, certain 5W-30): Several formulations are VW 502 00 or 504 00-approved and favored by many German-car specialists.
• Ravenol, Motul, and other European brands: Numerous VW-approved products exist in 0W-40, 5W-40, and 5W-30 grades that are well suited to the S4.

Because formulations and approvals can change, owners should always confirm the current VW 502 00 or 504 00 approval on the product label or the manufacturer’s official specification sheet before purchasing.

How to Verify You Have the Right Oil

With similar-sounding products on shelves, it can be easy to pick an oil that claims to be “suitable for European vehicles” but does not actually carry Audi/VW approval.

Steps to Confirm Compatibility

Careful checking at the time of purchase can prevent problems later, especially if warranty coverage or long-term reliability is a concern.

The next list outlines a simple method to verify that the oil you’re buying is appropriate for a 2018 Audi S4.

1. Read the label for VW 502 00 or 504 00: Look specifically for these codes; “recommended for” is not the same as “approved to.”
2. Check viscosity: Confirm that the grade (e.g., 0W-40, 5W-40, or approved 0W/5W-30) matches your climate and manual’s guidance.
3. Consult the owner’s manual: Compare what you see on the bottle with Audi’s official recommendations in the lubrication section.
4. Visit the manufacturer’s website: Many oil brands provide approval lists and technical data sheets confirming VW compliance.
5. Ask a reputable shop or dealer: If in doubt, a specialist independent shop or Audi dealer can verify suitability before an oil change.

Following this verification process ensures that your oil choice is not just close, but exactly in line with the standards Audi expects for the S4’s engine.

Summary

The 2018 Audi S4’s 3.0L TFSI V6 requires a full synthetic engine oil that meets VW 502 00 or VW 504 00 specifications, most commonly in 0W-40 or 5W-40 viscosity, with an approximate capacity of 7.2 quarts (6.8 liters) including the filter. While Audi permits extended service intervals, many owners prefer more frequent changes—around 5,000–7,500 miles—to better protect this high-performance turbocharged engine. As long as the oil is fully synthetic, carries the correct VW approval, and is matched to your climate, you will be using the right type of oil for a 2018 Audi S4.