Cadillac CT6 oil specs by year
Cadillac CT6 oil specs changed across the 2016–2020 range. The most recent checked year uses 6 qt of 5W-30. Select the exact year to see the checked capacity, viscosity, and filter for that model year.
Multiple engine options: The Cadillac CT6 was offered with 7 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 |
|---|---|---|---|---|
| 2020 | 6 qt | 5W-30 | AMSOIL EA15K01; AMSOIL EA15K02; AMSOIL EA15K03 Verified fit | Open record → |
| 2019 | 5.3 qt | 0W-20 | WIX 51032; WIX 51036; WIX 51040 Verified fit | Open record → |
| 2018 | 5 qt | 5W-30 | AMSOIL EA15K50; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
| 2017 | 5 qt | 5W-30 | AMSOIL EA15K50; AMSOIL EA15K01; AMSOIL EA15K02 Verified fit | Open record → |
| 2016 | 5 qt | 5W-30 | CHAMP / LUBER-FINER PH10064; AMSOIL EA15K50; AMSOIL EA15K01 Verified fit | Open record → |
Cadillac CT6 oil spec changes by year
Checked records show 2 spec changes across the 2016–2020 range. 2019: capacity and viscosity changed from 5 qt / 5W-30 to 5.3 qt / 0W-20 (vs 2018). 2020: capacity and viscosity changed from 5.3 qt / 0W-20 to 6 qt / 5W-30 (vs 2019). Open the exact year page for the full source notes before buying.
- 2019: capacity and viscosity changed to 5.3 qt / 0W-20 (was 5 qt / 5W-30 in 2018). Open 2019 record →
- 2020: capacity and viscosity changed to 6 qt / 5W-30 (was 5.3 qt / 0W-20 in 2019). Open 2020 record →
- 2019: engine option “4.2L V8 Turbo” added.
- 2019: engine option “4.2L Turbo” removed.
- 2020: engine option “3.0L Turbo” added.
- 2020: engine option “2.0L” added.
- 2020: engine option “2.0L 4-Cyl Turbo” removed.
- 2020: engine option “3.0L V6 Turbo” removed.
Cadillac CT6 oil — frequently asked questions
- What oil does the Cadillac CT6 take?
- The Cadillac CT6 oil spec has changed across model years. The most recent checked year uses 6 qt of 5W-30. Use the year table above to find the spec for your specific model year.
- Does the Cadillac CT6 oil capacity change across years?
- Yes. Checked records show 2 capacity changes across the 2016–2020 range. Use the year table above to find the exact capacity for your model year and confirm in your owner's manual.
- Does the Cadillac CT6 have different oil specs for different engines?
- Yes. The Cadillac CT6 has been offered with multiple engine options (2.0L, 2.0L 4-Cyl Turbo, 3.0L Turbo, and others). 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 CT6?
- The most recent checked year lists AMSOIL EA15K01; AMSOIL EA15K02; AMSOIL EA15K03 as a compatible oil filter for the Cadillac CT6. 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 CT6 year
Select a model year to open the exact checked oil fitment record before ordering.