🏷️ Basic Information Identification Make: BMW Model: 528 / 528i Model Generation: E28 Production Years Covered: 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988 Chassis Code: E28 Codes Engine Code 528I: M30B28 (2.8 L) Engine Code 528: M30B28 (2.8 L) 👋 Introduction Market Position Vehicle Segment: Executive Sedan / Luxury Mid-size Sedan Target Audience: Enthusiasts, independent repair shops, owners seeking to maintain and repair their classic BMWs. Competitive Analysis Key Competitors: Mercedes-Benz W123/W124, Audi 5000 (C2/C3), Volvo 240/740 Key Features Manual Value Proposition: Provides critical, detailed information essential for maintaining the performance and longevity of the E28 528 and 528i models, covering the entirety of their production run. Vehicle Strengths: Renowned for robust engineering, superior driving dynamics, and comfortable ride, representing a peak in BMW's 'Ultimate Driving Machine' philosophy for its era. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive Service and Repair Additional Coverage: Maintenance, Troubleshooting, Diagnostics, Specifications Page Count Estimated Page Count: Hundreds of pages Manual Type Manual Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Powertrain: Engine, Fuel System, Ignition System, Exhaust System, Transmission Chassis: Suspension, Steering, Brakes, Wheels, Tires Electrical: Charging System, Starting System, Lighting, Instrumentation, Body Electronics, Engine Control Unit (ECU) Body: Body Structure, Exterior Panels, Interior Trim, Climate Control Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, tune-ups Repair: Engine overhaul, transmission rebuild, brake caliper replacement, suspension component renewal, electrical component repair Troubleshooting: Diagnostic flowcharts, symptom-based troubleshooting, electrical system fault finding Specifications And Data: Torque specifications, clearance measurements, fluid capacities, wiring diagrams Technical Depth Depth Level: Complete workshop level: from basic maintenance to full engine and transmission overhauls, including detailed electrical schematics and diagnostic procedures. 📊 Manual Specifications File Format PDF Quality: High-resolution, printable quality, likely searchable text. Print Quality Printability: Designed for printing specific sections or the entire manual, allowing for a physical reference. Binding Type Binding Options: PDF format allows for various binding options (e.g., spiral bound, three-hole punched) upon printing. Paper Type Paper Recommendation: Standard printer paper for everyday use, heavier stock recommended for frequent reference or workshop environments. ⚙️ Engine Specifications Primary Engine Engine Type 528 528I: Inline 6-Cylinder, SOHC (M30 Overhead Camshaft) Displacement 528 528I: 2.8 Liters (2788 cc) Bore X Stroke 528 528I: 84.0 mm x 81.0 mm Compression Ratio 528 528I: Approximately 8.3:1 to 9.2:1 depending on specific variant and market. Performance Horsepower 528 528I: Approximately 181-184 hp @ 5800 rpm (SAE Net) Torque 528 528I: Approximately 230-235 Nm (170-174 lb-ft) @ 3500-4000 rpm Fuel System Fuel Delivery 528 528I: Bosch L-Jetronic or Motronic Fuel Injection Fuel Type 528 528I: Premium Unleaded Gasoline (91+ Octane) 🔧 Transmission Standard Standard Transmission: Getrag 260 5-Speed Manual Transmission Optional Optional Transmission: ZF 4HP22 4-Speed Automatic Transmission Features Clutch Type Manual: Hydraulically Actuated Single Dry Plate Clutch Transmission Fluid Manual: GL-4 Gear Oil (e.g., Pentosin MTF 75W-80 or equivalent) Transmission Fluid Automatic: Dexron II (or equivalent ATF) 📐 Dimensions Exterior Wheelbase: 2763 mm (108.8 in) Length: 4739 mm (186.6 in) Width: 1717 mm (67.6 in) Height: 1415 mm (55.7 in) Weights Curb Weight Manual: Approx. 1480 kg (3263 lbs) Curb Weight Automatic: Approx. 1510 kg (3329 lbs) Gross Vehicle Weight Rating: Approx. 1950 kg (4299 lbs) 🛡️ Safety Features Ratings Crash Test Availability: Limited crash test data available for this era, relying on contemporary safety design principles. Active Features Braking System: Four-wheel disc brakes (ventilated front, solid rear) ABS Availability: Anti-lock Braking System (ABS) was an optional feature on later models. Passive Features Seat Belts: Three-point inertia-reel seat belts with pre-tensioners. Driver Airbag Availability: Driver airbag was optional, becoming more common in the later years of the E28 production. 💡 Technology Features Infotainment Audio System: Basic analog radio and cassette player, often with optional premium sound systems (e.g., Blaupunkt or BMW branded). Power antenna. Driver Assistance Cruise Control: Optional electronic cruise control system. Climate Control: Manual or optional automatic climate control (ECC - Electronic Climate Control) with R134a refrigerant conversion often performed. Connectivity Original Connectivity: Limited to basic vehicle functions and audio. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000-15,000 km (6,000-10,000 miles) or 12 months, depending on driving conditions and oil type used. Consult manual for specifics. Spark Plug Replacement: Recommended at ~30,000-50,000 km (20,000-30,000 miles). Use specified BMW plugs (e.g., Bosch W8 AC). Timing Belt Chain: M30 engines use a timing chain, which is designed for the life of the engine but requires inspection for stretch or tensioner wear. Fluid Specifications Engine Oil Type: SAE 20W-50 or 15W-50 (API SG/SH or higher) is commonly recommended for M30 engines, especially in warmer climates. Consult manual for exact specifications. Coolant Type: BMW Blue Coolant or an equivalent ethylene glycol-based antifreeze with corrosion inhibitors. Brake Fluid Type: DOT 3 or DOT 4 Brake Fluid Known Issues Common Engine...