Checked oil specs by engine
2005 Audi A6 oil capacity, type & filter
Multiple engine options are listed for the 2005 Audi A6. Select your engine below before buying oil or a filter.
| Engine | Capacity | Oil Type | Filter |
|---|---|---|---|
| 4.2L V8 | — | 5W-40 | CHAMPION FILTER 55329T |
| 3.2L V6 | 6.9 qt | 5W-40 | WIX 51032 |
| 2.7L Turbo | 6.9 qt | 5W-40 | — |
Match one of 3 checked engine options before buying oil or a filter.
CHAMPION FILTER 55329T is copied into the checkout checklist below. Other listed filters are source-backed alternatives.
WIX 51032 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.
Search paths only — confirm your OEM viscosity spec and quantity before checkout.
2005 Audi A6 oil specs: capacity conditions and filter notes
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.
All listed filter part numbers are compatible alternatives for your vehicle. Choose any one brand, then confirm the exact part number at checkout.
Filter fitment has not been fully verified for every engine listed. Confirm the part number with the retailer before ordering.
Retailer fitment tools may use different data. Confirm oil capacity, viscosity, and filter part number before ordering.
Source coverage for the 2005 Audi A6
Supported by Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager).
Supported by AMSOIL Lookup and Castrol (Olyslager).
Supported by Purolator Part Finder, RockAuto, and AMSOIL Lookup.
5 checked source rows for the 2005 Audi A6.
Before ordering for this 2005 Audi A6
- Capacity
- Unverified
- Oil type
- 5W-40
- Interval
- 10,000 mi / 12 mo
- Filter
- CHAMPION FILTER 55329T
- Capacity
- 6.9 qt
- Oil type
- 5W-40
- Interval
- 10,000 mi / 12 mo
- Filter
- WIX 51032
- Capacity
- 6.9 qt
- Oil type
- 5W-40
- Interval
- 10,000 mi / 12 mo
- Filter
- Unverified
Source check: Last checked 2026-06-24 from AMSOIL Lookup, Pennzoil OATS, RockAuto, Purolator Part Finder, and Castrol (Olyslager).
Audi A6 oil specs by year
This table includes checked Audi A6 model years available in our database.
| Year | Capacity | Oil type | Filter |
|---|---|---|---|
| 2024 | 3.2 qt (multiple engines) | 10W-60 | Purolator PL21478 |
| 2023 | 3.2 qt (multiple engines) | 10W-60 | Purolator PL21478 |
| 2022 | 3.2 qt (multiple engines) | 10W-60 | Purolator PL21478 |
| 2021 | 3.2 qt (multiple engines) | 10W-60 | Purolator L28161 |
| 2018 | 5 qt (multiple engines) | 5W-40 | WIX 51032 |
| 2017 | 5 qt (multiple engines) | 5W-40 | WIX 51032 |
| 2016 | 5 qt (multiple engines) | 5W-40 | WIX 51032 |
| 2015 | 4.9 qt (multiple engines) | 5W-40 | Purolator L35895 |
| 2014 | 4.9 qt (multiple engines) | 5W-40 | AMSOIL 51870 |
| 2013 | 4.9 qt (multiple engines) | 5W-40 | AMSOIL EA15K01 |
| 2012 | 4.9 qt (multiple engines) | 5W-40 | AMSOIL EA15K01 |
| 2005 Current page | 8.9 qt (multiple engines) | 5W-40 | CHAMPION FILTER 55329T |
How we verified 2005 Audi A6 oil data
How we verify fitmentChecked fitment data. Last checked: 2026-06-24.
This page checked 5 sources for the 2005 Audi A6. 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
- Sources checked
- 5
- Last checked
- 2026-06-24
- Capacity: Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager)
- Oil type: AMSOIL Lookup and Castrol (Olyslager)
- Filter: Purolator Part Finder, RockAuto, and AMSOIL Lookup
- Change interval: AMSOIL Lookup and Castrol (Olyslager)
| Source | Supports | Checked | Link |
|---|---|---|---|
| AMSOIL Lookup | Oil type, Capacity, Filter | 2026-06-24 | Visit brand site |
| Pennzoil OATS | Capacity | 2026-06-24 | Visit brand site |
| RockAuto | Filter | 2026-06-24 | Checked source |
| Purolator Part Finder | Filter | 2026-06-24 | Visit brand site |
| Castrol (Olyslager) | Oil type, Capacity | 2026-06-24 | Visit brand site |
2005 Audi A6 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 A6 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 A6?
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 A6 maintenance checklist
One part checked. Look up the rest while you're here.
- Cabin air filter 2005 Audi A6 cabin filter part numbers
- Engine air filter 2005 Audi A6 engine filter part numbers
- Oil type & capacity 5W-40 Checked
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.
Walmart
Compare oil and filter listings for the 2005 Audi A6. Confirm capacity, viscosity, and filter part number before checkout.
Search 2005 Audi A6 oil & filter →AutoZone
Use AutoZone's vehicle selector for the 2005 Audi A6 before checkout to confirm oil capacity, viscosity, and filter fitment.
Search 2005 Audi A6 oil & filter →Amazon
Search Amazon listings for the 2005 Audi A6 and check listing fitment notes against the specs above.
Search 2005 Audi A6 oil & filter →O'Reilly
Open O'Reilly's fitment search for the 2005 Audi A6 and verify oil capacity, viscosity, and filter part number before ordering.
Search 2005 Audi A6 oil & filter →Look up another vehicle
Find checked oil capacity, type, and filter data by exact year, make, and model.