The Cadillac XT6 with the 3.6-liter V6 typically requires about 5.7 quarts (5.4 liters) of engine oil when changing the filter. This is the standard wet-fill capacity for most recent XT6 models, though you should always verify with your specific year and manual.
Oil capacity for the XT6 3.6L V6
The XT6 uses a 3.6L V6 (LGX) engine. The official oil-fill amount, including a new filter, is commonly 5.7 quarts (5.4 liters). If you omit replacing the filter during an oil change, the amount you add can be around 5.0 quarts, but replacing the filter is strongly recommended to maintain proper oil flow and engine protection.
- Engine: 3.6L V6 (LGX) used in most 2019–2024 XT6 models.
- Oil capacity with a new filter: 5.7 quarts (5.4 L).
- Oil capacity without changing the filter: approximately 5.0 quarts.
- Recommended oil grade: Dexos1 Gen 2 0W-20 (synthetic or synthetic blend as specified by GM).
- Filling practice: warm the engine, replace the filter, fill to the full mark on the dipstick, then recheck after a short run.
Note: capacities can vary slightly by model year and market. Always confirm with the owner’s manual or GM service data for your exact vehicle.
Oil type and maintenance recommendations
Use Dexos1 Gen 2 0W-20 as the standard oil for the XT6 3.6L, ensuring full synthetic or synthetic-blend oil meets GM approval. This helps with engine protection, fuel efficiency, and emissions compliance. After an oil change, check the level with a warm engine on a level surface and recheck after the engine has cooled for a few minutes.
Model-year variations
Most 2019–2024 XT6 models with the 3.6L LGX share the same capacity (around 5.7 quarts with filter). Some early-year imports or market-specific configurations may show minor differences. Always consult your vehicle’s manual or GM service data for your exact year and region.
Summary
In short, plan on about 5.7 quarts (5.4 liters) of oil when performing a complete change on a Cadillac XT6 with the 3.6L V6 and a new filter, using Dexos1 Gen 2 0W-20. Verify the figure against your year and model, and follow GM’s recommended maintenance steps for best results.