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The Cadillac XLR, produced from 2004 to 2009, was a luxury convertible sports car that marked Cadillac’s entry into the high-performance luxury segment. This two-seater roadster was built on the same platform as the Chevrolet Corvette but featured distinct Cadillac styling and luxury touches. Its exterior design showcased Cadillac’s signature bold grille, and it had a retractable hardtop roof that seamlessly transformed it from a coupe to a convertible at the push of a button. Inside the XLR, the cabin was lavishly appointed with premium materials, including leather and wood trim. Technologically advanced features included a head-up display, adaptive cruise control, and a touchscreen infotainment system. Underneath its stylish exterior, the XLR featured a sport-tuned suspension and Magnetic Ride Control, which adapted to driving conditions for a smooth yet agile ride. While it shared the Corvette’s powerful V8 engine, the XLR prioritized refinement and luxury over all-out performance. Despite its limited production run, the XLR left a lasting impression as a symbol of Cadillac’s aspirations in the luxury sports car segment, offering a blend of style, comfort, and performance.



Cadillac XLR specification, engine oil capacity, spark plug gap, safety rating, fuel consumption, transmission, and light bulb sizes.

Engine 4.6L  8-Cylinder DOHC

  • Recommended oil viscosity: 5W-30
  • Oil certification: API
  • Drain plug torque: 18 ft-lbs
  • Oil capacity: 8.0 quarts

Spark Plug Gap

  • 4.6L  8-Cylinder: 0.040”


  • Type: 50/50 mixture of clean, drinkable water and use only DEX-COOL® Coolant.

Hydraulic Brake System

  • Type: Delco Supreme 11 Brake Fluid or equivalent DOT-3 brake fluid

Windshield Washer Solvent

  • Type: GM Optikleen® Washer Solvent.

Power Steering System

  • Type: GM Power Steering Fluid (GM Part No.U.S. 89021184, in Canada 89021186).

Automatic Transmission

  • Type: DEXRON®-III Automatic Transmission Fluid
  • Capacity: 9.5 quarts (8.5 L)

Trunk Key Lock Cylinder

  • Type: Multi-Purpose Lubricant, Superlube (GM Part No. U.S. 12346241, in Canada 10953474)

Rear Axle (Limited-Slip Differential)

  • Type: SAE 75W-90 Synthetic  Axle Lubricant (GM Part No. U.S. 12378261, in Canada 10953455) meeting GM  Specification 9986115. With a complete drain and refill, add 4 ounces (118 ml) of Limited-Slip  Axle Lubricant Additive (GM Part No. U.S. 1052358, in Canada 992694)

Hood Latch Assembly, Secondary Latch,  Pivots, Spring  Anchor, and Release Pawl

  • Type: Lubriplate Lubricant Aerosol (GM Part No. U.S. 12346293, in Canada 992723) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.

Hood and Door Hinges

  • Type: Multi-Purpose Lubricant, Superlube (GM Part No. U.S. 12346241, in Canada 10953474)

Weatherstrip Conditioning

  • Type:  Dielectric Silicone Grease (GM Part No. U.S. 12345579, in Canada 992887)

Air Conditioning

  • Type: Refrigerant R134a
  • Capacity: 1.4 lbs (0.64 kg)


  • Capacity: 18.5 gallons (70.0 L)



  • 4.6 L Northstar V8
  • 4.4 L Northstar Supercharged V8


  • 5-speed 5L50 automatic
  • 6-speed 6L80 automatic

Fuel Consumption



Front Lights

  • Daytime Running Light Bulb
    • 3157-SCK
    •  3757NAKLCP
  • Front Fog Light Bulb: 9045
  • Front Sidemarker Light Bulb: 2825
  • Front Turn Signal Light Bulb:
    • 3157-SCK
    • 3757NAKLCP
  • High Beam and Low Beam Headlight Bulb: HID-D1S
  • Stepwell Light Bulb: 194

Rear Lights

  • Back Up Light Bulb: 3156
  • Brake Light Bulb: LED
  • Center High Mount Stop Light Bulb: LED
  • License Plate Light Bulb: 2825L
  • Parking Light Bulb: 2825
  • Rear Sidemarker Light Bulb: LED
  • Rear Turn Signal Light Bulb: LED
  • Tail Light Bulb: LED

Interior Lights

  • Glove Box Light Bulb: 194
  • Interior Door Light Bulb: 561
  • Map Light Bulb 212-2
  • Trunk Light Bulb: PC168