2018 Buick Regal Oil Type & Capacity
The 2018 Buick Regal oil type depends on the engine: the Base takes 5W-30 (5.0 quarts qt with filter); the Essence, AWD takes 5W-30 (6.0 quarts qt with filter); the Essence, FWD takes 5W-30 (5.0 quarts qt with filter); the GS takes 5W-30 (6.0 quarts qt with filter); the Preferred, AWD takes 5W-30 (6.0 quarts qt with filter); the Preferred, FWD takes 5W-30 (5.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base: 5W-30, 5.0 quarts with filter
- Essence, AWD: 5W-30, 6.0 quarts with filter
- Essence, FWD: 5W-30, 5.0 quarts with filter
- GS: 5W-30, 6.0 quarts with filter
- Preferred, AWD: 5W-30, 6.0 quarts with filter
- Preferred, FWD: 5W-30, 5.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base — 2.0L Eng,FWD | API - SAE 5W-30 Full Synthetic Engine Oil | 5.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. In an area of extreme cold, where the temperature falls below -29Deg.C (-20Deg.F), 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. |
| Essence, AWD — 2.0L Eng,AWD | API - SAE 5W-30 Full Synthetic Engine Oil | 6.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. In an area of extreme cold, where the temperature falls below -29Deg.C (-20Deg.F), 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. |
| Essence, FWD — 2.0L Eng,FWD | API - SAE 5W-30 Full Synthetic Engine Oil | 5.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. In an area of extreme cold, where the temperature falls below -29Deg.C (-20Deg.F), 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. |
| GS — 3.6L Eng | API - SAE 5W-30 Full Synthetic Engine Oil | 6.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. In an area of extreme cold, where the temperature falls below -29Deg.C (-20Deg.F), 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. |
| Preferred, AWD — 2.0L Eng,AWD | API - SAE 5W-30 Full Synthetic Engine Oil | 6.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. In an area of extreme cold, where the temperature falls below -29Deg.C (-20Deg.F), 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. |
| Preferred, FWD — 2.0L Eng,FWD | API - SAE 5W-30 Full Synthetic Engine Oil | 5.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. In an area of extreme cold, where the temperature falls below -29Deg.C (-20Deg.F), 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 Regal
🛞 2018 Buick Regal Tire Size & Pressure →🌧️ 2018 Buick Regal Wiper Blade Sizes →💡 2018 Buick Regal Light Bulb Sizes →📖 2018 Buick Regal Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
5.3 quarts (5.01 L) — 50/50 mixture of DEX-COOL and clean, drinkable water
Frequently asked questions
What type of oil does a 2018 Buick Regal take?
It depends on the engine: Base uses 5W-30; Essence, AWD uses 5W-30; Essence, FWD uses 5W-30; GS uses 5W-30; Preferred, AWD uses 5W-30; Preferred, FWD uses 5W-30.
What is the oil capacity of a 2018 Buick Regal?
Oil capacity depends on the engine: Base holds 5.0 quarts with filter; Essence, AWD holds 6.0 quarts with filter; Essence, FWD holds 5.0 quarts with filter; GS holds 6.0 quarts with filter; Preferred, AWD holds 6.0 quarts with filter; Preferred, FWD holds 5.0 quarts with filter.
How often should I change the oil in my 2018 Buick Regal?
Most 2018 Buick Regal 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 — Buick recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2018 Buick Regal?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2018 Buick Regal. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.