2015 Buick Regal Oil Type & Capacity
The 2015 Buick Regal oil type depends on the engine: the 2.0L takes 5W-30 (5.0 quarts qt with filter); the 2.0L takes 5W-30 (6.0 quarts qt with filter); the 2.4L takes 5W-30 (5.0 quarts qt with filter); the GS, AWD takes 5W-30 (6.0 quarts qt with filter); the GS, FWD, Automatic Trans takes 5W-30 (5.0 quarts qt with filter); the GS, FWD, Standard Trans 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
- 2.0L: 5W-30, 6.0 quarts with filter
- 2.0L: 5W-30, 6.0 quarts with filter
- 2.0L: 5W-30, 5.0 quarts with filter
- 2.4L: 5W-30, 5.0 quarts with filter
- 2.4L: 5W-30, 5.0 quarts with filter
- GS, AWD: 5W-30, 6.0 quarts with filter
- GS, FWD, Automatic Trans: 5W-30, 5.0 quarts with filter
- GS, FWD, Standard Trans: 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 — Base, 2.0L Eng VIN X, FWD, Trans Mfr CD 6T70, 2.0L Eng,FWD | 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. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. 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, FWD, Trans Mfr CD 6T70/M7W, 2.0L Eng,FWD | 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. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. 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, AWD, 2.0L Eng,AWD | 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. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. 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 — Premium, 2.0L Eng VIN X, AWD, 2.0L Eng,AWD | 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. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. 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 — Premium, 2.0L Eng VIN X, FWD, 2.0L Eng,FWD | 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. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. 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. |
| 2.4L — Base, 2.4L Eng VIN K, 2.4L 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. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. 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. |
| 2.4L — Premium, 2.4L Eng VIN R, 2.4L 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. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. 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. |
| GS, AWD — 2.0L Eng,AWD | 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. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. 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. |
| GS, FWD, Automatic Trans — 2.0L Eng,FWD | 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. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. 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. |
| GS, FWD, Standard Trans — 2.0L Eng,FWD | 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. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. 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. |
📦 DIY Oil Change Kit Builder
Complete Oil Change Bundle for 2015 Buick Regal
Everything you need delivered in one order. Pre-matched to your factory spec (5W-30, 5.0 quarts).
Preferred Oil Brand:
Mobil 1 5W-30 Full Synthetic OilExact Spec
5-Quart Jug (5.0 quarts needed)
$27.97Item Link ↗
2015 Buick Regal Premium Synthetic Oil FilterExact Fit
OEM-fitment high-efficiency synthetic filter media (2.0L)
$11.99Item Link ↗
Oil Drain Plug Crush Washer Gaskets (5-Pack)Recommended
Direct-fit replacement seal — prevents oil leaks after tightening
$6.99Item Link ↗
15-Quart Low-Profile Drain Pan with Pour SpoutTool
Catch-all basin with anti-splash lip & secure transport cap
$18.99Item Link ↗
RhinoRamps 12,000 lb Drive-Up Vehicle RampsTool
Safe driveway clearance for quick vehicle underbody access
$49.99Item Link ↗
Heavy-Duty Black Nitrile Gloves (Box of 100)PPE
6-mil commercial-grade chemical & oil resistant mechanics gloves
$14.99Item Link ↗
Multi-Angle Spill-Proof Oil Funnel SetTool
Wide-mouth funnel with flexible neck to eliminate engine bay spills
$8.99Item Link ↗
Scott Blue Shop Towels (6-Pack)Supplies
Ultra-absorbent lint-free automotive towels for clean-up
$12.99Item Link ↗
Selected Items: 3 items
$46.95 est. total
As an Amazon Associate we earn from qualifying purchases. Prices shown are real-time retail estimates.
Buy the right oil & filter for your Regal
🛒 Buy 5W-30 Full Synthetic Oil (5.0 quarts needed) on AmazonPopular Full Synthetic Brands (5W-30):
As an Amazon Associate we earn from qualifying purchases made through these links.
More factory specs & repair guides for your Regal
🛞 2015 Buick Regal Tire Size & Pressure →🌧️ 2015 Buick Regal Wiper Blade Sizes →💡 2015 Buick Regal Light Bulb Sizes →📖 2015 Buick Regal Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
7.8 quarts (7.38 L) — 50/50 mixture of DEX-COOL and clean, drinkable water
Frequently asked questions
What type of oil does a 2015 Buick Regal take?
It depends on the engine: 2.0L uses 5W-30; 2.0L uses 5W-30; 2.4L uses 5W-30; GS, AWD uses 5W-30; GS, FWD, Automatic Trans uses 5W-30; GS, FWD, Standard Trans uses 5W-30.
What is the oil capacity of a 2015 Buick Regal?
Oil capacity depends on the engine: 2.0L holds 5.0 quarts with filter; 2.0L holds 6.0 quarts with filter; 2.4L holds 5.0 quarts with filter; GS, AWD holds 6.0 quarts with filter; GS, FWD, Automatic Trans holds 5.0 quarts with filter; GS, FWD, Standard Trans holds 5.0 quarts with filter.
How often should I change the oil in my 2015 Buick Regal?
Most 2015 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 2015 Buick Regal?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2015 Buick Regal. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.
Other Buick Regal years
2020 Regal2019 Regal2018 Regal2017 Regal2016 Regal2014 Regal2013 Regal2012 Regal2011 Regal2004 Regal2003 Regal2002 Regal2001 Regal2000 Regal1999 Regal1998 Regal1997 Regal1996 Regal1995 Regal1994 Regal1993 Regal1992 Regal1991 Regal1990 Regal1989 Regal1988 Regal1987 Regal1986 Regal1985 Regal1984 Regal1983 Regal