Checked oil specs by engine
2021 Audi S6 oil capacity, type & filter
The 2021 Audi S6 takes 8 qt of 0W-30 oil.
Applies to checked engine: 2.9L 6-Cyl Turbo.
PO99500EX is copied into the checkout checklist below. Other listed filters are source-backed alternatives.
2021 Audi S6 oil specs: capacity conditions and filter notes
All listed filter part numbers are compatible alternatives for your vehicle. Choose any one brand, then confirm the exact part number at checkout.
Retailer fitment tools may use different data. Confirm oil capacity, viscosity, and filter part number before ordering.
Source coverage for the 2021 Audi S6
Supported by Pennzoil OATS and Castrol (Olyslager).
Supported by Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager).
Supported by K&N Filters, Purolator Part Finder, and RockAuto.
6 checked source rows for the 2021 Audi S6.
Before ordering for this 2021 Audi S6
- Capacity
- 8 qt
- Oil type
- 0W-30
- Interval
- 10,000 mi / 12 mo
- Filter
- PO99500EX
Source check: Last checked 2026-06-23 from K&N Filters, Pennzoil OATS, RockAuto, AMSOIL Lookup, Purolator Part Finder, and Castrol (Olyslager).
Audi S6 oil specs by year
This table includes checked Audi S6 model years available in our database.
| Year | Capacity | Oil type | Filter |
|---|---|---|---|
| 2025 | 8 qt | 0W-30 | AMSOIL 51458350 |
| 2024 | 8 qt | 0W-30 | PO99500EX |
| 2023 | 8 qt | 0W-30 | PO99500EX |
| 2022 | 8 qt | 0W-30 | PO99500EX |
| 2021 Current page | 8 qt | 0W-30 | PO99500EX |
| 2020 | 8 qt | 0W-30 | PO99500EX |
| 2015 | 9.2 qt | 5W-40 | BOSCH 3481 |
| 2014 | 8.8 qt | 5W-40 | BOSCH 3481 |
| 2013 | 8.8 qt | 5W-40 | BOSCH 3481 |
| 2012 | 8.8 qt | 5W-40 | Unverified |
| 2011 | 10.6 qt | 5W-40 | PRO-TEC PXL57330 |
| 2010 | 10.6 qt | 5W-40 | ULTRA-POWER 57204 |
| 2009 | 10.6 qt | 5W-40 | PRO-TEC PXL57330 |
| 2008 | 10.6 qt | 5W-40 | PRO-TEC PXL57330 |
| 2007 | 10.6 qt | 5W-40 | PRO-TEC PXL57330 |
How we verified 2021 Audi S6 oil data
How we verify fitmentChecked fitment data. Last checked: 2026-06-23.
This page checked 6 sources for the 2021 Audi S6. 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
- Verified fit
- Sources checked
- 6
- Last checked
- 2026-06-23
- Capacity: Pennzoil OATS and Castrol (Olyslager)
- Oil type: Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager)
- Filter: K&N Filters, Purolator Part Finder, and RockAuto
- Change interval: Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager)
| Source | Supports | Checked | Link |
|---|---|---|---|
| K&N Filters | Filter | 2026-06-23 | Visit brand site |
| Pennzoil OATS | Capacity, Oil type | 2026-06-23 | Visit brand site |
| RockAuto | Filter | 2026-06-23 | Checked source |
| AMSOIL Lookup | Oil type | 2026-06-23 | Visit brand site |
| Purolator Part Finder | Filter | 2026-06-23 | Visit brand site |
| Castrol (Olyslager) | Capacity, Oil type | 2026-06-23 | Visit brand site |
2021 Audi S6 maintenance checklist
One part checked. Look up the rest while you're here.
- Cabin air filter 2021 Audi S6 cabin filter part numbers
- Wiper blade size 2021 Audi S6 driver & passenger blade sizes
- Oil type & capacity 0W-30 · 8 qt Checked
Where to buy
These are retailer search paths for your vehicle's oil and filter specs. Verify final fitment at checkout.
This section may include affiliate or sponsored retailer links. They are purchase paths, not fitment evidence.
Walmart
Compare oil and filter listings for the 2021 Audi S6. Confirm capacity, viscosity, and filter part number before checkout.
Search 2021 Audi S6 oil & filter →AutoZone
Use AutoZone's vehicle selector for the 2021 Audi S6 before checkout to confirm oil capacity, viscosity, and filter fitment.
Search 2021 Audi S6 oil & filter →Amazon
Search Amazon listings for the 2021 Audi S6 and check listing fitment notes against the specs above.
Search 2021 Audi S6 oil & filter →O'Reilly
Open O'Reilly's fitment search for the 2021 Audi S6 and verify oil capacity, viscosity, and filter part number before ordering.
Search 2021 Audi S6 oil & filter →Look up another vehicle
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