2017 Cadillac CT6 Oil Type & Capacity
The 2017 Cadillac CT6 oil type depends on the engine: the 2.0L takes 5W-30 (5.0 quarts qt with filter); the 3.0L takes 5W-30 (6.0 quarts qt with filter); the 3.6L takes 5W-30 (6.0 quarts qt with filter); the Plug-In takes 5W-30 (5.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- 2.0L: 5W-30, 5.0 quarts with filter
- 2.0L: 5W-30, 5.0 quarts with filter
- 3.0L: 5W-30, 6.0 quarts with filter
- 3.0L: 5W-30, 6.0 quarts with filter
- 3.0L: 5W-30, 6.0 quarts with filter
- 3.6L: 5W-30, 6.0 quarts with filter
- 3.6L: 5W-30, 6.0 quarts with filter
- 3.6L: 5W-30, 6.0 quarts with filter
- 3.6L: 5W-30, 6.0 quarts with filter
- Plug-In: 5W-30, 5.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 2.0L — Luxury, 2.0L Eng VIN X, 2.0L Eng | API - SAE 5W-30 | 5.00 QTS. | — | Use only engine oil licensed to the dexos1 specification, or equivalent, of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. If in an area of extreme cold, where the temperature falls below -20Deg.F (-29Deg.C), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. |
| 2.0L — Base, 2.0L Eng VIN X, 2.0L Eng | API - SAE 5W-30 | 5.00 QTS. | — | Use only engine oil licensed to the dexos1 specification, or equivalent, of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. If in an area of extreme cold, where the temperature falls below -20Deg.F (-29Deg.C), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. |
| 3.0L — Premium Luxury, 3.0L Eng VIN 6, 3.0L Eng | API - SAE 5W-30 | 6.00 QTS. | — | Use only engine oil licensed to the dexos1 specification, or equivalent, of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. If in an area of extreme cold, where the temperature falls below -20Deg.F (-29Deg.C), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. |
| 3.0L — Platinum, 3.0L Eng VIN 6, 3.0L Eng | API - SAE 5W-30 | 6.00 QTS. | — | Use only engine oil licensed to the dexos1 specification, or equivalent, of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. If in an area of extreme cold, where the temperature falls below -20Deg.F (-29Deg.C), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. |
| 3.0L — Luxury, 3.0L Eng VIN 6, 3.0L Eng | API - SAE 5W-30 | 6.00 QTS. | — | Use only engine oil licensed to the dexos1 specification, or equivalent, of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. If in an area of extreme cold, where the temperature falls below -20Deg.F (-29Deg.C), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. |
| 3.6L — Platinum, 3.6L Eng VIN S, 3.6L Eng | API - SAE 5W-30 | 6.00 QTS. | — | Use only engine oil licensed to the dexos1 specification, or equivalent, of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. If in an area of extreme cold, where the temperature falls below -20Deg.F (-29Deg.C), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. |
| 3.6L — Luxury, 3.6L Eng VIN S, 3.6L Eng | API - SAE 5W-30 | 6.00 QTS. | — | Use only engine oil licensed to the dexos1 specification, or equivalent, of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. If in an area of extreme cold, where the temperature falls below -20Deg.F (-29Deg.C), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. |
| 3.6L — Base, 3.6L Eng VIN S, 3.6L Eng | API - SAE 5W-30 | 6.00 QTS. | — | Use only engine oil licensed to the dexos1 specification, or equivalent, of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. If in an area of extreme cold, where the temperature falls below -20Deg.F (-29Deg.C), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. |
| 3.6L — Premium Luxury, 3.6L Eng VIN S, 3.6L Eng | API - SAE 5W-30 | 6.00 QTS. | — | Use only engine oil licensed to the dexos1 specification, or equivalent, of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. If in an area of extreme cold, where the temperature falls below -20Deg.F (-29Deg.C), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. |
| Plug-In — 2.0L Eng | API - SAE 5W-30 | 5.00 QTS. | — | Use only engine oil licensed to the dexos1 specification, or equivalent, of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. If in an area of extreme cold, where the temperature falls below -20Deg.F (-29Deg.C), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. |
More factory specs & repair guides for your CT6
🛞 2017 Cadillac CT6 Tire Size & Pressure →🌧️ 2017 Cadillac CT6 Wiper Blade Sizes →💡 2017 Cadillac CT6 Light Bulb Sizes →📖 2017 Cadillac CT6 Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
9.1 quarts (8.61 L) — 50/50 mixture of DEX-COOL and clean, drinkable water. All capacities are approximate. When adding, be sure to fill to the approximate level. Recheck the fluid level after filling.
Frequently asked questions
What type of oil does a 2017 Cadillac CT6 take?
It depends on the engine: 2.0L uses 5W-30; 3.0L uses 5W-30; 3.6L uses 5W-30; Plug-In uses 5W-30.
What is the oil capacity of a 2017 Cadillac CT6?
Oil capacity depends on the engine: 2.0L holds 5.0 quarts with filter; 3.0L holds 6.0 quarts with filter; 3.6L holds 6.0 quarts with filter; Plug-In holds 5.0 quarts with filter.
How often should I change the oil in my 2017 Cadillac CT6?
Most 2017 Cadillac CT6 owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Cadillac recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2017 Cadillac CT6?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2017 Cadillac CT6. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.