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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2019 Buick RegalOil Type & Capacity
OEM spec from the factory service manual for the Avenir variant.
Quick Answer
Oil Type
API - SAE 5W-30 Full Synthetic Engine Oil
Capacity (w/ Filter)
5.00 QTS.
4.73 L
Variant
Avenir
Note: 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.
Source: Factory service manual — 2019 Buick Regal Avenir. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of oil does a 2019 Buick Regal take?
- The 2019 Buick Regal requires API - SAE 5W-30 Full Synthetic Engine Oil. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Avenir configuration.
- How much oil does a 2019 Buick Regal need?
- The 2019 Buick Regal takes 5.00 QTS. (4.73 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2019 Buick Regal?
- Yes — synthetic oil that meets the API - SAE 5W-30 Full Synthetic Engine Oil specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 2019 Buick Regal?
- Using oil that does not meet the API - SAE 5W-30 Full Synthetic Engine Oil specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.