Checked oil specs by engine
2021 Buick Enclave oil capacity, type & filter
The 2021 Buick Enclave takes 6 qt of 5W-30 oil.
Applies to checked engine: 3.6L V6.
AMSOIL EA15K01 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.
2021 Buick Enclave 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 Buick Enclave
Supported by Pennzoil OATS, AMSOIL Lookup, Castrol (Olyslager), Valvoline Product Finder, and CarAraC Engine Oil.
Supported by Pennzoil OATS, Castrol (Olyslager), Valvoline Product Finder, and CarAraC Engine Oil.
Supported by RockAuto, Purolator Part Finder, and AMSOIL Lookup.
7 checked source rows for the 2021 Buick Enclave.
Before ordering for this 2021 Buick Enclave
- Capacity
- 6 qt
- Oil type
- 5W-30
- Interval
- 12 mo
- Filter
- AMSOIL EA15K01
Source check: Last checked 2026-06-27 from AMSOIL Lookup, Pennzoil OATS, RockAuto, Purolator Part Finder, Valvoline Product Finder, CarAraC Engine Oil, and Castrol (Olyslager).
Buick Enclave oil specs by year
This table includes checked Buick Enclave model years available in our database.
| Year | Capacity | Oil type | Filter |
|---|---|---|---|
| 2025 | 5.5 qt | 0W-20 | WIX 51032 |
| 2024 | 6 qt (multiple engines) | 5W-30 | AMSOIL EA15K01 |
| 2023 | 6 qt | 5W-30 | AMSOIL EA15K01 |
| 2022 | 6 qt | 5W-30 | AMSOIL EA15K01 |
| 2021 Current page | 6 qt | 5W-30 | AMSOIL EA15K01 |
| 2020 | 6 qt | 5W-30 | AMSOIL EA15K01 |
| 2019 | 6 qt | 5W-30 | AMSOIL EA15K01 |
| 2018 | 6 qt | 5W-30 | AMSOIL EA15K01 |
| 2017 | 6 qt | 5W-30 | PRO-TEC PXL10255 |
| 2016 | 6 qt | 5W-30 | PRO-TEC PXL10255 |
| 2015 | 6 qt | 5W-30 | PRO-TEC PXL10255 |
| 2011 | 5.5 qt | 5W-30 | PRO-TEC PXL10255 |
| 2010 | 5.5 qt | 5W-30 | AMSOIL EA15K50 |
| 2009 | 5.5 qt | 5W-30 | AMSOIL EA15K50 |
| 2008 | 5.5 qt | 5W-30 | AMSOIL EA15K50 |
How we verified 2021 Buick Enclave oil data
How we verify fitmentChecked fitment data. Last checked: 2026-06-27.
This page checked 7 sources for the 2021 Buick Enclave. 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
- 7
- Last checked
- 2026-06-27
- Capacity: Pennzoil OATS, AMSOIL Lookup, Castrol (Olyslager), Valvoline Product Finder, and CarAraC Engine Oil
- Oil type: Pennzoil OATS, Castrol (Olyslager), Valvoline Product Finder, and CarAraC Engine Oil
- Filter: RockAuto, Purolator Part Finder, and AMSOIL Lookup
- Change interval: Pennzoil OATS, Castrol (Olyslager), Valvoline Product Finder, and CarAraC Engine Oil
| Source | Supports | Checked | Link |
|---|---|---|---|
| AMSOIL Lookup | Capacity, Filter | 2026-06-27 | Visit brand site |
| Pennzoil OATS | Capacity, Oil type | 2026-06-27 | Visit brand site |
| RockAuto | Filter | 2026-06-27 | Checked source |
| Purolator Part Finder | Filter | 2026-06-27 | Visit brand site |
| Valvoline Product Finder | Capacity, Oil type | 2026-06-27 | Checked source |
| CarAraC Engine Oil | Capacity, Oil type | 2026-06-27 | Checked source |
| Castrol (Olyslager) | Capacity, Oil type | 2026-06-27 | Visit brand site |
2021 Buick Enclave maintenance checklist
One part checked. Look up the rest while you're here.
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 Buick Enclave. Confirm capacity, viscosity, and filter part number before checkout.
Search 2021 Buick Enclave oil & filter →AutoZone
Use AutoZone's vehicle selector for the 2021 Buick Enclave before checkout to confirm oil capacity, viscosity, and filter fitment.
Search 2021 Buick Enclave oil & filter →Amazon
Search Amazon listings for the 2021 Buick Enclave and check listing fitment notes against the specs above.
Search 2021 Buick Enclave oil & filter →O'Reilly
Open O'Reilly's fitment search for the 2021 Buick Enclave and verify oil capacity, viscosity, and filter part number before ordering.
Search 2021 Buick Enclave oil & filter →Look up another vehicle
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