🏷️ Basic Information Identification Make: Subaru Model: Impreza Model Generation: First Generation (GC/GF/GM) Model Years Covered: 1997, 1998 Engine Type: Gasoline Codes Chassis Codes: GC8 (Sedan), GF8 (Wagon) 👋 Introduction Market Position Segment: Compact Car / Sport Compact Brand Perception: Known for All-Wheel Drive (AWD) capability and rally heritage Competitive Analysis Competitors 1997-1998: Honda Civic, Toyota Corolla, Mitsubishi Lancer, Nissan Sentra, Ford Escort Key Features Drivetrain Offering: Symmetrical All-Wheel Drive (standard on many models) Engine Variant Emphasis: Focus on the 1.8L naturally aspirated engine Value Proposition For Owners: Enables DIY maintenance and repair, saving costs and extending vehicle life 📋 Manual Details Coverage Areas Service And Repair: Comprehensive Maintenance: Scheduled and routine maintenance Troubleshooting: Diagnostic procedures and solutions Page Count Estimated Pages: 1000+ Manual Type Type: Full Service & Repair Manual Language Language: English Format Format: Digital (Likely PDF, though format not explicitly stated beyond 'manual') 📖 Manual Coverage Systems Covered Engine: Engine mechanical, lubrication, cooling, fuel, ignition, emission control systems Transmission: Manual and automatic transmission repair and overhaul Drivetrain: All-Wheel Drive (AWD) system, differentials, axles, driveshafts Suspension: Front and rear suspension components, steering, alignment Brakes: Brake system components, hydraulics, ABS (if equipped) Electrical: Wiring diagrams, lighting, power windows, central locking, battery, charging system Body And Chassis: Body panels, interior trim, structural components, corrosion protection HVAC: Heating, ventilation, and air conditioning system service Diagnostics: On-board diagnostics (OBD-I for this era), fault code interpretation Procedures Included Engine Repair: Engine rebuild, cylinder head removal/installation, piston and ring replacement Transmission Service: Clutch replacement, transmission fluid changes, internal component repair Brake Service: Brake pad and rotor replacement, brake caliper service, brake bleeding Suspension Repair: Strut and shock absorber replacement, ball joint service, wheel bearing replacement Electrical Diagnostics: Wiring harness repair, component testing, fuse and relay identification Body Repair: Panel replacement, dent repair, door and latch adjustment Scheduled Maintenance: Oil changes, filter replacements, spark plug replacement, timing belt inspection/replacement Technical Depth Depth: Comprehensive (from basic maintenance to full engine and transmission overhauls) 📊 Manual Specifications File Format File Type: PDF (Assumed for digital format, allowing for searchability and printing) Print Quality Quality: High-resolution, clear diagrams and text (assumed for professional use) Binding Type Binding: N/A (Digital) Paper Type Paper Quality: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Code Common: EJ18 (SOHC) Engine Displacement: 1.8 Liters (1781 cc) Engine Configuration: Naturally Aspirated, Horizontally-Opposed (Boxer) 4-cylinder Bore X Stroke: 80.0 mm x 88.0 mm Compression Ratio: 9.5:1 (Typical for EJ18) Performance Horsepower Est: 112 hp @ 5600 rpm Torque Est: 114 lb-ft @ 4000 rpm Fuel System Fuel Delivery: Multi-Point Fuel Injection (MPI) Fuel Type: Unleaded Gasoline (87 Octane Recommended) Engine Management ECU Type: Engine Control Unit (ECU) with OBD-I diagnostics Cooling System Coolant Type: Ethylene Glycol based coolant (e.g., Subaru Super Coolant or equivalent) Lubrication Oil Type: API SG, SH, or SJ rated SAE 10W-30 or 10W-40 (Check owner's manual for specific climate recommendations) 🔧 Transmission Standard Type: 5-speed Manual Transmission (Likely with AWD) Optional Type: 4-speed Automatic Transmission (Available with AWD) Features AWD System: Symmetrical All-Wheel Drive with Viscous Coupling Center Differential Fluid Specifications Manual Transmission Fluid: API GL-5 SAE 75W-90 (Check manual for exact specification and capacity) Automatic Transmission Fluid: Dexron III or equivalent (Check manual for exact specification and capacity) 📐 Dimensions Exterior Wheelbase Sedan: Approx. 2510 mm (98.8 in) Wheelbase Wagon: Approx. 2510 mm (98.8 in) Track Width Front: Approx. 1470 mm (57.9 in) Track Width Rear: Approx. 1460 mm (57.5 in) Weights Curb Weight Est: 1200 - 1350 kg (2645 - 2975 lbs) depending on body style and transmission 🛡️ Safety Features Ratings NHTSA Frontal Impact: 4-star (for driver) and 3-star (for passenger) in earlier tests (check specific model year for exact data) Active Features Braking System: Front: Ventilated Discs, Rear: Discs or Drums (depending on trim/AWD configuration) ABS: Anti-lock Braking System (Optional on some models, standard on higher trims) Passive Features Airbags: Driver and Passenger Frontal Airbags (Standard) Seatbelts: 3-point front and rear seat belts 💡 Technology Features Infotainment Audio System: Factory AM/FM Stereo with Cassette Player (CD Player optional on higher trims) Speakers: Typically 4-6 speakers Driver Assistance Cruise Control: Available on most models Connectivity External Ports: None (Pre-USB era) 🔧 Maintenance Service Intervals Oil And Filter Change: Every 3,750 - 7,500 miles or 6 months (whichever comes first, check manual for climate/driving conditions) Air Filter Replacement: Every 15,000 - 30,000 miles (or as needed based on driving environment) Spark Plug Replacement: Every 60,000 - 100,000 miles (depending on spark plug type, platinum/iridium recommended) Timing Belt Replacement: Every 60,000 - 100,000 miles or 5-7 years (Critical maintenance item for interference engine) Fluid Specifications Coolant Capacity: Approx. 6.1 Liters (6.4 US Quarts) (Check manual for exact) Brake Fluid Type: DOT 3 or DOT 4 (Check manual for specific recommendation) Known Issues Head Gaskets: While less common on the EJ18...