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The Buick Regal from 1997 to 2004 marked a transition in Buick’s design and engineering philosophy, adopting a more contemporary and European-inspired approach. This generation of the Regal featured a sleeker, aerodynamic exterior design, departing from the traditional American sedan styling of its predecessors. It was offered in sedan and coupe body styles, providing consumers various options. Inside, the Regal boasted a more upscale and refined cabin with modern amenities, catering to the demands of discerning buyers. Underpinning the Regal’s performance was a choice of V6 engines, delivering adequate power and a comfortable ride. Buick’s focus on safety was evident with the inclusion of advanced features such as anti-lock brakes and airbags. The Regal aimed to balance comfort and handling, making it a competitive choice. Overall, the Buick Regal from 1997 to 2004 showcased Buick’s efforts to modernize its lineup while retaining the brand’s commitment to delivering a comfortable and stylish driving experience.



Buick Regal specifications, engine oil capacity, spark plug gap, safety rating, fuel consumption, transmission, and light bulb sizes.


  • W-Body 2nd Gen (FF Layout)

Supercharged 3.8L V6 Engine (240 hp, 280 lb-ft of torque)

  • Recommended Oil Viscosity: 5W-30
  • Oil Certification: API
  • Drain Plug Torque: 18 lb-ft (24 Nm)
  • Oil Capacity: 4.5 quarts

Spark Plug Gap

  • 0.050 inches (1.27mm)

Engine Coolant

  • Capacity: 11.8 quarts (11.2 liters)


  • Capacity: 17.5 gallons (66.2 liters)
  • Fuel Type: Unleaded gasoline

Windshield Washer Fluid

  • Capacity: 2.0 liters or 2.1 quarts

Brake Fluid

  • Type: DOT 3


  • 2.2 L L34 I4 (China)
  • 2.5 L LB8 V6 (China)
  • 3.0 L LW9 V6 (China)
  • 3.8 L 3800 Series II V6


  • 4-speed 4T60-E automatic
  • 4-speed 4T65-E automatic
  • 4-speed 4T65-E HD automatic

Fuel Consumption



  • Fog Light Bulb: 893
  • Side Marker Light Bulb: 194
  • Turn Signal Light Bulb: 4157NAK
  • High Beam Light Bulb: 9005
  • Low Beam Light Bulb: 9006


  • Back-Up Reverse Light Bulb: 1156
  • Brake Light Bulb: 3057
  • High Mount Brake Light Bulb: 1141
  • License Plate Light Bulb: 194
  • Side Marker Light Bulb: 194
  • Turn Signal Light Bulb: 3057


  • Ashtray Light Bulb: 194
  • Dome Light Bulb: 168
  • Glove Compartment Light Bulb: 194
  • Map Light Bulb: 168
  • Step Light Bulb: 194
  • Trunk Light Bulb: 920
  • Under the Hood Light Bulb: 561