Cadillac STS oil specs by year
The Cadillac STS (2005–2011) uses 6 qt of 5W-30 oil across all 7 model years covered here for the primary engine. Select a year below for the full record with filter part numbers and source notes.
Multiple engine options: The Cadillac STS was offered with 3 engine options across its history.
Open the exact year page and select your engine to see the correct capacity and viscosity for your vehicle.
| Year | Capacity | Oil type | Filter | Page |
|---|---|---|---|---|
| 2011 | 6 qt | 5W-30 | R84090; Purolator L25274; AMSOIL EA15K28 Verified fit | Open record → |
| 2010 | 6 qt | 5W-30 | AMSOIL EA15K28; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
| 2009 | 6 qt | 5W-30 | AMSOIL EA15K28; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
| 2008 | 6 qt | 5W-30 | AMSOIL EA15K28; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
| 2007 | 6 qt | 5W-30 | AMSOIL EA15K28; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
| 2006 | 6 qt | 5W-30 | AMSOIL EA15K28; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
| 2005 | 6 qt | 5W-30 | AMSOIL EA15K28; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
Cadillac STS oil spec changes by year
Oil specs remained consistent across the 2005–2011 model years covered here. The primary engine uses 6 qt of 5W-30 throughout this range. Always open the exact year page and confirm the source notes before buying.
Capacity
6 qt
Same across all 7 listed years
Oil type
5W-30
Same across all 7 listed years
Filter brands
Purolator, AMSOIL, K&N
In checked records — open year page for part numbers
- 2006: engine option “4.4L V8” added.
- 2010: engine option “4.4L V8” removed.
- 2011: engine option “4.6L V8” removed.
Cadillac STS oil — frequently asked questions
- What oil does the Cadillac STS take?
- The Cadillac STS takes 6 qt of 5W-30 oil across the 2005–2011 model years covered here. Always open the exact year page and confirm in your owner's manual before buying.
- Is the oil capacity the same for all Cadillac STS years?
- Yes. All 7 Cadillac STS model years covered here use 6 qt as the primary engine capacity. Confirm in your owner's manual before buying.
- Does the Cadillac STS have different oil specs for different engines?
- Yes. The Cadillac STS has been offered with multiple engine options (3.6L V6, 4.4L V8, 4.6L V8). Each engine can have a different oil capacity and viscosity. Open the exact year page, select your engine, and confirm specs before buying.
- What oil filter fits the Cadillac STS?
- The most recent checked year lists R84090; Purolator L25274; AMSOIL EA15K28 as a compatible oil filter for the Cadillac STS. Filter part numbers can change across model years — open the exact year page for the source-checked part number for your year.
Look up a specific Cadillac STS year
Select a model year to open the exact checked oil fitment record before ordering.