Buick Regal Owners & Service Manuals

Buick Regal: Fuel (2.0L Turbo Engine)

Premium Recommended Fuel

Premium Recommended Fuel

Use premium 93 octane unleaded gasoline in your vehicle. Unleaded gasoline with an octane rating as low as 87 may be used, but it will reduce performance and fuel economy.

Fuel (3.6L Engine)

Regular Fuel

Regular Fuel

Use only unleaded gasoline rated 87 octane or higher in your vehicle.

Do not use gasoline with an octane rating lower as it may result in vehicle damage and lower fuel economy.

E85 or FlexFuel

No E85 or FlexFuel

No E85 or FlexFuel

Gasoline-ethanol fuel blends greater than E15 (15% ethanol by volume), such as E85, cannot be used in this vehicle.

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     Engine Oil Life System

    The engine oil life system calculates engine oil life based on vehicle use and displays the CHANGE ENGINE OIL SOON message when it is time to change the engine oil and filter. The oil life system sho

     Keys, Doors, and Windows

     Keys and Locks

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     DTC B2625

    Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptor DT

     Seat Adjustment

    Manual Seats Warning: You can lose control of the vehicle if you try to adjust a driver seat while the vehicle is moving. Adjust the driver seat only when the vehicle is not moving. To adjust a manual seat: 1. Pull up on the handle at the front of the seat. 2. Slide the seat to the desired positi

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