The 2017 Cadillac ATS uses Dexos1 Gen 2 approved, full-synthetic motor oil with a viscosity of 5W-30.
Engine options and oil requirements
The 2017 ATS was offered with three gasoline engines: a 2.0-liter turbocharged four-cylinder, a 2.5-liter naturally aspirated four, and a 3.6-liter V6. Across these variants, GM specifies Dexos1 Gen 2 approved 5W-30 full-synthetic oil as the standard specification. Always confirm the exact viscosity on the oil fill cap or in the owner's manual, as recommendations can vary by climate and model year.
Key oil requirements you should know before you buy or change oil:
- Oil type: Dexos1 Gen 2 approved, full-synthetic motor oil
- Viscosity: SAE 5W-30 (standard for the 2017 ATS engines)
- Brand compatibility: Oils should explicitly certify Dexos1 Gen 2 approval to ensure GM compatibility
Bottom line: Use Dexos1 Gen 2 5W-30 full-synthetic motor oil for the 2017 Cadillac ATS engines, and consult the owner's manual or the fill cap for any model-specific deviations, especially in extreme temperatures or when you have an ATS-V variant.
Why the specification matters
Using the correct Dexos1 Gen 2 oil helps protect the engine, sustain performance, and meet GM warranty requirements. A non-approved oil can affect lubrication and emission control over time.
Summary
For the 2017 Cadillac ATS, the recommended oil is Dexos1 Gen 2 approved full-synthetic 5W-30. This applies across the model's engines, but always verify with the owner's manual or the oil cap for your exact configuration and climate. Regular oil changes with the correct specification help keep the ATS running smoothly and preserve warranty coverage.