24Car-Repair
Understanding the precise engine oil capacity for your Buick Regal is critical for maintaining optimal engine performance, longevity, and fuel efficiency. This comprehensive guide provides detailed specifications, technical data, and an interactive calculator to help you determine the exact oil capacity for your specific Buick Regal model year and engine type.
- Model Coverage: 2011-2022 Buick Regal models
- Engine Types: 2.0L Turbo I4, 2.4L I4, 3.6L V6, 2.0L eAssist
- Oil Specifications: Viscosity, type, and capacity details
- Interactive Calculator: Determine exact capacity for your vehicle
The Buick Regal has undergone several generations and engine variations since its reintroduction in 2011. Each engine type has specific oil capacity requirements that must be adhered to for proper lubrication and cooling. Using incorrect oil quantities can lead to increased engine wear, overheating, or hydraulic lock.
Oil capacity is typically measured with and without filter replacement. When changing both oil and filter, additional oil is needed to fill the new filter element. The values below represent factory specifications for dry engine fills (after complete oil drainage).
| Model Year Range | Engine Type | With Filter (US qt) | Without Filter (US qt) | With Filter (Liters) | Recommended Oil Type |
|---|---|---|---|---|---|
| 2018-2022 | 2.0L LTG Turbo I4 | 5.0 | 4.7 | 4.73 | 0W-20 Full Synthetic |
| 2014-2017 | 2.0L LTG Turbo I4 | 5.0 | 4.7 | 4.73 | 5W-30 Full Synthetic |
| 2013-2017 | 2.4L LEA I4 | 5.2 | 4.9 | 4.92 | 5W-30 Full Synthetic |
| 2012-2014 | 2.0L LHU eAssist | 4.8 | 4.5 | 4.54 | 5W-30 Full Synthetic |
| 2011-2013 | 3.6L LFX V6 | 6.0 | 5.7 | 5.68 | 5W-30 Full Synthetic |
| 2011-2012 | 2.0L LTD Turbo I4 | 5.0 | 4.7 | 4.73 | 5W-30 Full Synthetic |
Note: 1 US quart = 0.946353 liters. Values may vary slightly depending on oil pan design and manufacturing tolerances. Always verify with dipstick after oil change.
The 2.0L LTG turbocharged inline-4 engine is the most common powerplant in recent Buick Regal models. This direct-injection engine features a twin-scroll turbocharger, variable valve timing, and an integrated exhaust manifold. The oil system includes a capacity-optimized oil pan designed for weight reduction while maintaining proper oil cooling and circulation.
2.0L LTG Turbo Engine Technical Specifications
Displacement
1998 cc (2.0L)
Compression Ratio
9.5:1
Maximum Oil Pressure
55 psi (379 kPa)
Oil Pump Type
Variable-displacement vane pump
Oil Filter Location
Top-mounted, accessible from engine bay
Oil Drain Plug Torque
18 lb-ft (24 Nm)
Buick Regal engines utilize a wet-sump oiling system with strategically designed baffles to prevent oil starvation during hard cornering and acceleration. The oil pan’s capacity is carefully calculated to provide adequate oil volume for lubrication and cooling while minimizing windage losses that can reduce engine efficiency.
The 2018+ models with 0W-20 oil specification represent GM’s move toward lower viscosity oils to improve fuel economy. These engines have tighter bearing clearances and precision-machined oil passages to maintain proper oil pressure with thinner oil.
The interactive calculator provided in this guide uses factory specifications to determine precise oil capacity for your Buick Regal. Follow these steps for accurate results:
Step 1: Identify your Buick Regal’s model year. This can be found on the driver’s side door jamb sticker, vehicle registration, or title.
Step 2: Determine your engine type. The 2.0L Turbo is most common in 2014+ models. The 2.4L naturally aspirated engine was available primarily in base models through 2017.
Step 3: Select your oil preference. Full synthetic is recommended for all Buick Regal models, but the calculator allows selection of synthetic blend or conventional for comparison.
Step 4: Use the calculated results to prepare the correct amount of oil for your oil change. Remember to account for approximately 0.3 quarts that will remain in the engine after draining.
Proper oil change procedures extend beyond just adding the correct quantity of oil. Following manufacturer-recommended practices ensures optimal engine protection and longevity.
| Driving Condition | Recommended Interval | Oil Monitoring System | Additional Notes |
|---|---|---|---|
| Normal Driving | 7,500 miles or 12 months | Follow Oil Life System | Highway driving, moderate climates |
| Severe Service | 3,000-5,000 miles or 6 months | Reduce by 50% | Towing, extreme temperatures, short trips |
| Track/Performance | After each event | Disregard | High RPM, sustained operation |
| Low Mileage/Storage | 12 months maximum | Time-based override | Oil degrades over time regardless of mileage |
Using the correct oil filter is as important as using the right oil. Buick Regal models typically use one of these filter part numbers:
- ACDelco PF64: Standard filter for 2.0L and 2.4L engines (2011-2022)
- ACDelco PF63: Used on some 3.6L V6 models
- WIX 57060: Aftermarket equivalent with synthetic media
- Mobil 1 M1-212A: Extended performance filter
The oil filter capacity is approximately 0.3 quarts, which is accounted for in the “with filter” oil capacity specification.
