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Checked oil specs by engine

2005 Audi A8 L oil capacity, type & filter

Multiple engine options are listed for the 2005 Audi A8 L. Select your engine below before buying oil or a filter.

2005 Audi A8 L oil specs by engine
Engine Capacity Oil Type Filter
4.2L V8 — 5W-40 Purolator L45579
6.0L 13.2 qt 5W-40 Purolator L35890

Match one of 2 checked engine options before buying oil or a filter. Also check 2005 Audi A8 .

4.2L V8
Capacity Not confirmed Confirm the service-fill amount for this engine before adding oil.
Oil type 5W-40 i Based on 1 checked source: Castrol (Olyslager). Additional cross-check is still pending: a second checked oil-type source. Use it as a reference, then confirm the viscosity grade for this engine before checkout. See how we verify. Learn how we verify fitment
A3/B4
Oil Filters
Purolator Shown first L45579 Search L45579

Confirm Purolator L45579 in the retailer selector before checkout.

i Based on 1 checked source: Purolator Part Finder. Additional cross-check is still pending: another filter catalog cross-check and alternate part-number support. Use it as a reference, then confirm the exact filter part number at checkout. See how we verify. Learn how we verify fitment
6.0L
Capacity 13.2 qt i Based on 1 checked source: Castrol (Olyslager). Additional cross-check is still pending: a second checked capacity source and capacity condition (service fill / with filter vs dry fill). Use it as a reference, then confirm the service-fill / with-filter amount before adding oil. See how we verify. Learn how we verify fitment
Oil type 5W-40 i Based on 1 checked source: Castrol (Olyslager). Additional cross-check is still pending: a second checked oil-type source. Use it as a reference, then confirm the viscosity grade for this engine before checkout. See how we verify. Learn how we verify fitment
A3/B4
Oil Filters
Purolator Shown first L35890 Search L35890

Confirm Purolator L35890 in the retailer selector before checkout.

i Based on 1 checked source: Purolator Part Finder. Additional cross-check is still pending: another filter catalog cross-check and alternate part-number support. Use it as a reference, then confirm the exact filter part number at checkout. See how we verify. Learn how we verify fitment

2 sources checked Last checked: 2026-06-25 How we verify →

Where to Buy View Data Sources
Buy oil & filters:
Walmart → AutoZone → Amazon → O'Reilly →
Full synthetic options for 5W-40
Mobil 1 ESP Formula 5W-40 → Castrol Edge 5W-40 → Liqui Moly Top Tec 4200 5W-40 →

Search paths only — confirm your OEM viscosity spec and quantity before checkout.

2005 Audi A8 L oil specs: capacity conditions and filter notes

Which engine applies?

Check the door jamb sticker, owner's manual, or displacement badge on the engine cover. Match it to the engine options listed above before buying oil or a filter.

Verify before checkout

Retailer fitment tools may use different data. Confirm oil capacity, viscosity, and filter part number before ordering.

Source coverage for the 2005 Audi A8 L

Capacity sources

Supported by Castrol (Olyslager).

Oil type sources

Supported by Castrol (Olyslager).

Filter sources

Supported by Purolator Part Finder.

Source coverage

2 checked source rows for the 2005 Audi A8 L.

Before ordering for this 2005 Audi A8 L

Checkout verification checklist
4.2L V8 Buy →
Capacity
Unverified
Oil type
5W-40
Interval
10,000 mi / 12 mo
Filter
Purolator L45579
6.0L Buy →
Capacity
13.2 qt
Oil type
5W-40
Interval
10,000 mi / 12 mo
Filter
Purolator L35890

Source check: Last checked 2026-06-25 from Purolator Part Finder and Castrol (Olyslager).

Audi A8 L oil specs by year

This table includes checked Audi A8 L model years available in our database.

No other published Audi A8 L years are available yet.

How we verified 2005 Audi A8 L oil data

How we verify fitment

Checked fitment data. Last checked: 2026-06-25.

This page checked 2 sources for the 2005 Audi A8 L. The table lists which checked source contributed capacity, oil type, or filter evidence.

We checked leading oil brands and aftermarket filter catalogs so you don't have to.

Confidence
Cross-check pending i Some oil fields are based on checked source data but still need stronger cross-check evidence. Review area: 4.2L V8 oil type, 4.2L V8 oil filter, 6.0L capacity, 6.0L oil type, and 6.0L oil filter. Use the listed values as references and confirm the exact engine before ordering or adding oil. See how we verify. Learn how we verify fitment
Sources checked
2
Last checked
2026-06-25
Field-level source support
  • Capacity: Castrol (Olyslager)
  • Oil type: Castrol (Olyslager)
  • Filter: Purolator Part Finder
  • Change interval: Castrol (Olyslager)
Source Supports Checked Link
Purolator Part Finder Filter 2026-06-25 Visit brand site
Castrol (Olyslager) Oil type, Capacity 2026-06-25 Visit brand site

2005 Audi A8 L oil FAQ

Which engine configuration applies to my vehicle?

Use the door jamb sticker, owner's manual, or engine cover badge to identify your engine, then match it to the engine options listed above.

Is the oil capacity measured with or without the filter?

Capacity condition matters. With filter includes a new filter. Service fill is the typical drain-and-fill amount. Dry fill is for a fresh empty engine only.

Why should I confirm before buying?

Retailer catalogs can update separately. Confirm the exact 2005 Audi A8 L selector at checkout before you buy.

Do I also need to match the OEM oil approval?

Yes. Viscosity is only one part of the oil spec. Match the oil approval listed in your owner's manual or on the bottle before checkout.

How often should I change the oil on a 2005 Audi A8 L?

Change intervals vary by engine option for this vehicle. Always follow your owner's manual and oil-life monitor. Severe service may require a shorter interval.

Do I need a new drain plug gasket?

Replace it when your vehicle uses a serviceable gasket or crush washer. Confirm the gasket size and drain plug torque from the service manual or parts counter.

2005 Audi A8 L maintenance checklist

One part checked. Look up the rest while you're here.

Where to buy

These are retailer search paths for your vehicle. The specs above are checked — use the retailer's vehicle selector at checkout to confirm before ordering.

This section may include affiliate or sponsored retailer links. They are purchase paths, not fitment evidence.

Look up another vehicle

Find checked oil capacity, type, and filter data by exact year, make, and model.

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