Checked oil specs by engine
2016 Cadillac XTS oil capacity, type & filter
The 2016 Cadillac XTS takes 6 qt of 5W-30 oil.
Applies to checked engine: 3.6L V6 Turbo.
PRO-TEC PXL10255 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.
2016 Cadillac XTS 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 2016 Cadillac XTS
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 Purolator Part Finder, RockAuto, and AMSOIL Lookup.
7 checked source rows for the 2016 Cadillac XTS.
Before ordering for this 2016 Cadillac XTS
- Capacity
- 6 qt
- Oil type
- 5W-30
- Interval
- 12 mo
- Filter
- PRO-TEC PXL10255
Source check: Last checked 2026-06-27 from Pennzoil OATS, AMSOIL Lookup, RockAuto, Purolator Part Finder, Valvoline Product Finder, CarAraC Engine Oil, and Castrol (Olyslager).
Cadillac XTS oil specs by year
This table includes checked Cadillac XTS model years available in our database.
| Year | Capacity | Oil type | Filter |
|---|---|---|---|
| 2018 | 6 qt | 5W-30 | AMSOIL EA15K01 |
| 2017 | 6 qt | 5W-30 | PRO-TEC PXL10255 |
| 2016 Current page | 6 qt | 5W-30 | PRO-TEC PXL10255 |
| 2015 | 6 qt | 5W-30 | PRO-TEC PXL10255 |
| 2014 | 6 qt | 5W-30 | WIX 51459 |
| 2013 | 6 qt | 5W-30 | AMSOIL EA15K01 |
How we verified 2016 Cadillac XTS oil data
How we verify fitmentChecked fitment data. Last checked: 2026-06-27.
This page checked 7 sources for the 2016 Cadillac XTS. 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
- 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: Purolator Part Finder, RockAuto, and AMSOIL Lookup
- Change interval: Pennzoil OATS, Castrol (Olyslager), Valvoline Product Finder, and CarAraC Engine Oil
| Source | Supports | Checked | Link |
|---|---|---|---|
| Pennzoil OATS | Capacity, Oil type | 2026-06-27 | Visit brand site |
| AMSOIL Lookup | Capacity, Filter | 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 |
2016 Cadillac XTS oil FAQ
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 2016 Cadillac XTS 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 2016 Cadillac XTS?
Castrol's service data indicates a 12 mo change interval for the 2016 Cadillac XTS. 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.
2016 Cadillac XTS 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.
Walmart
Compare oil and filter listings for the 2016 Cadillac XTS. Confirm capacity, viscosity, and filter part number before checkout.
Search 2016 Cadillac XTS oil & filter →AutoZone
Use AutoZone's vehicle selector for the 2016 Cadillac XTS before checkout to confirm oil capacity, viscosity, and filter fitment.
Search 2016 Cadillac XTS oil & filter →Amazon
Search Amazon listings for the 2016 Cadillac XTS and check listing fitment notes against the specs above.
Search 2016 Cadillac XTS oil & filter →O'Reilly
Open O'Reilly's fitment search for the 2016 Cadillac XTS and verify oil capacity, viscosity, and filter part number before ordering.
Search 2016 Cadillac XTS oil & filter →Look up another vehicle
Find checked oil capacity, type, and filter data by exact year, make, and model.