2020 Cadillac CT6 Oil Type & Capacity
The 2020 Cadillac CT6 oil type depends on the engine: the Luxury takes 5W-30 (6.0 quarts qt with filter); the Platinum takes 0W-40 (9.0 quarts qt with filter); the Premium Luxury takes 5W-30 (6.0 quarts qt with filter); the V takes 0W-40 (9.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Luxury: 5W-30, 6.0 quarts with filter
- Platinum: 0W-40, 9.0 quarts with filter
- Premium Luxury: 5W-30, 6.0 quarts with filter
- V: 0W-40, 9.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Luxury — 3.6L Eng | API - SAE 5W-30 | 6.00 QTS. | — | ACDelco dexos1 full synthetic engine oil. |
| Platinum — 4.2L Eng | API - SAE 0W-40 | 9.00 QTS. | — | ACDelco dexos 2 engine oil. |
| Premium Luxury — 3.6L Eng | API - SAE 5W-30 | 6.00 QTS. | — | ACDelco dexos1 full synthetic engine oil. |
| V — 4.2L Eng | API - SAE 0W-40 | 9.00 QTS. | — | ACDelco dexos 2 engine oil. |
More factory specs & repair guides for your CT6
🛞 2020 Cadillac CT6 Tire Size & Pressure →🌧️ 2020 Cadillac CT6 Wiper Blade Sizes →💡 2020 Cadillac CT6 Light Bulb Sizes →📖 2020 Cadillac CT6 Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
10.4 quarts (9.84 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 2020 Cadillac CT6 take?
It depends on the engine: Luxury uses 5W-30; Platinum uses 0W-40; Premium Luxury uses 5W-30; V uses 0W-40.
What is the oil capacity of a 2020 Cadillac CT6?
Oil capacity depends on the engine: Luxury holds 6.0 quarts with filter; Platinum holds 9.0 quarts with filter; Premium Luxury holds 6.0 quarts with filter; V holds 9.0 quarts with filter.
How often should I change the oil in my 2020 Cadillac CT6?
Most 2020 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 2020 Cadillac CT6?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2020 Cadillac CT6. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.