🏷️ Basic Information Identification Make: Oldsmobile Model: Regency Year: 1998 Codes Chassis Code: H-body Platform: GM H-body 👋 Introduction Market Position Positioning: Premium Full-Size Sedan Competitive Analysis Key Competitors: Buick LeSabre, Ford Crown Victoria, Chevrolet Caprice Key Features Defining Characteristics: Comfort-oriented, spacious interior, smooth ride, V8 engine options Manual Advantage: Official licensing and OE data ensures accuracy and completeness, offering a significant advantage over generic online sources or outdated printed manuals. Manual Usability: User-friendly interface, searchable text, direct access to specific repair procedures. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Diagnostics, Maintenance, Troubleshooting Page Count Estimated Pages: 1500+ Manual Type Type: Digital Service and Repair Manual Software Content Source: Licensed from OE (Original Equipment) Materials via RepairSurge Language Language: English Format Format: Online Access (Web Browser) Access Duration: 1 Year Subscription Compatibility: Compatible with PC, Laptop, Smartphone, Tablet via Web Browser 📖 Manual Coverage Systems Covered Powertrain: Engine, Fuel System, Cooling System, Exhaust System, Drivetrain, Transmission Chassis: Suspension, Steering, Brakes, Wheels, Tires Electrical: Starting System, Charging System, Ignition System, Lighting, Instrumentation, Body Electrical, Powertrain Control Module (PCM), Anti-lock Braking System (ABS) Comfort And Convenience: Heating, Ventilation, and Air Conditioning (HVAC), Interior Trim, Exterior Trim, Doors, Windows, Seats Body And Frame: Frame, Exterior Panels, Doors, Windows, Locks, Body Hardware Procedures Included Maintenance: Scheduled Maintenance, Fluid Changes, Filter Replacements, Lubrication Repair: Engine Overhaul, Transmission Rebuild, Brake Component Replacement, Suspension Component Replacement, Electrical Component Diagnosis and Repair, HVAC System Repair Diagnostics: Troubleshooting Flowcharts, Symptom-Based Diagnostics, Diagnostic Trouble Codes (DTCs) Interpretation, Component Testing Procedures Special Tools: Identification and usage of specific GM service tools Technical Depth Depth: Factory-Level Technical Data, Complete Repair Procedures, Detailed Diagrams and Illustrations Wiring Diagrams: Comprehensive Electrical Schematics and Wiring Harness Diagrams 📊 Manual Specifications File Format Digital Format: Web-Based Application Print Quality Printability: Printable Sections Available Binding Type Binding: N/A (Digital) Paper Type Paper Type: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Code And Type: 3.8L (3800 Series II) V6 OHV, Naturally Aspirated Displacement: 3.8 Liters (231 cubic inches) Performance Horsepower: 205 hp @ 5200 rpm Torque: 230 lb-ft @ 3200 rpm Fuel System Fuel Delivery: Sequential Multi-Port Fuel Injection (MFI) Fuel Type: Unleaded Regular (87 Octane) Engine Codes Alternative Alternative Engine: 4.6L L37 Northstar V8 OHV, Naturally Aspirated Alternative Engine Performance V8 Horsepower: 275 hp @ 6000 rpm V8 Torque: 295 lb-ft @ 4400 rpm Engine Notes Engine Features: Aluminum block and heads, sequential fuel injection, dual catalytic converters 🔧 Transmission Standard Transmission Type: 4-Speed Automatic Overdrive Transmission Model: 4T65-E Optional Optional Transmission: N/A (4-Speed Automatic Standard) Features Transmission Features: Electronic shift control, torque converter lock-up 📐 Dimensions Exterior Length: 203.5 inches Width: 74.4 inches Height: 55.6 inches Wheelbase: 110.8 inches Weights Curb Weight: 3600-3800 lbs (Varies by trim and engine) Cargo Trunk Volume: 17.0 cubic feet 🛡️ Safety Features Ratings NHTSA Front Impact: 4/5 Stars (Driver/Passenger) IIHS Side Impact: Acceptable (for its class and era) Active Features ABS: Standard Anti-lock Braking System (ABS) Passive Features Airbags: Driver and Passenger Frontal Airbags Seatbelts: Front Pretensioner Seatbelts 💡 Technology Features Infotainment Audio System: Factory AM/FM Stereo with Cassette Player and CD Player (Optional), Bose premium sound system (Optional) Driver Assistance Cruise Control: Standard Electronic Cruise Control Traction Control: Optional Traction Control System (TCS) Connectivity Connectivity Features: N/A (Limited to factory radio/cassette/CD features) 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000 - 7,500 miles or 6-12 months (depending on oil type and driving conditions, consult manual for specifics) Transmission Fluid Change: Every 30,000 - 60,000 miles or as per manual recommendations. Spark Plug Replacement: V6: Approx. 100,000 miles (for Platinum tipped plugs); V8: Varies based on plug type. Fluid Specifications Engine Oil Type: SAE 5W-30 (API Certified, meets GM specification GM6094M) Engine Oil Capacity: 4.5 quarts (with filter for V6), 5.0 quarts (with filter for V8) Coolant Type: Dex-Cool (Orange) Extended Life Antifreeze/Coolant Transmission Fluid Type: Dexron III Automatic Transmission Fluid Known Issues Common Problems: Intake manifold gasket leaks (3800 V6), power steering leaks, water pump failures, ABS sensor issues, PCV valve issues. Diagnostic Challenges: Intermittent electrical gremlins, complex HVAC systems, powertrain control module (PCM) diagnostics. 📚 Vehicle History Brand Heritage Brand Focus: Oldsmobile was known for combining performance and luxury, often with innovative features. Model Evolution Regency Lineage: The Regency nameplate was used by Oldsmobile on various models, but this 1998 version is a trim level of the Oldsmobile 88 and later the Intrigue, built on GM's H-body platform, emphasizing comfort and luxury. Production Production Period: 1998 Oldsmobile 88 Regency was the final iteration of the 88 model before its successor. Manufacturing Location: General Motors Assembly Plants (USA) 🏆 Awards & Recognition Recognitions Industry Awards: The 3800 Series II V6 engine received multiple awards for its reliability and performance from publications like Ward's AutoWorld.