The 2019 Cadillac XTS uses Dexos1 Gen 2 certified synthetic motor oil, typically 5W-30.
The XTS relies on a 3.6-liter V6 engine that GM approves only for Dexos1 Gen 2 oils with a viscosity usually recommended as 5W-30 in most climates. Always confirm the exact specification in the owner's manual or with a dealer, as regional variations and trim differences can affect the exact grade and capacity. The following guidance summarizes the standard requirement to help drivers source the right oil with confidence.
Oil Specifications and Certification
Below is a concise guide to the key oil requirements you should follow for the 3.6L V6 in the 2019 XTS.
- Oil must meet Dexos1 Gen 2 specification
- Viscosity commonly recommended: 5W-30
- Oil type: synthetic oil is preferred; synthetic blend is acceptable if Dexos Gen 2 certified
- Oil capacity (with filter): typically in the 5–6 quart range; exact amount is listed in the owner's manual
Adhering to Dexos1 Gen 2 certification and the specified viscosity helps ensure proper lubrication, engine protection, emissions compliance, and warranty coverage. Always verify the precise grade and capacity for your vehicle's VIN and market.
Maintenance and Verification
To avoid guesswork, rely on GM’s oil life monitor and the official manual for service intervals. The XTS will indicate when an oil change is due, which can vary based on driving conditions and climate. When in doubt, consult a certified Cadillac service adviser to confirm the correct oil and change schedule for your car.
Summary
In short, a 2019 Cadillac XTS should run Dexos1 Gen 2 synthetic oil, most commonly at 5W-30. Use the grade and capacity specified in your owner’s manual and have the vehicle serviced by an GM-approved technician to maintain performance and warranty coverage.