🏷️ Basic Information Identification Make: BMW Model: 535i & M535i Chassis Code: E28 Applicable Years: 1985, 1986, 1987, 1988 👋 Introduction Market Position Positioning: The E28 generation represented a significant evolution for BMW's executive sedan, blending performance, luxury, and advanced engineering. The 535i and M535i were positioned as the performance-oriented variants within this esteemed lineup. Competitive Analysis Competitors: Competed against other high-performance luxury sedans of its era, such as Mercedes-Benz W124 models (e.g., 300E), Audi 100/200, and Jaguar XJ-S, offering a compelling blend of German engineering and driving dynamics. Key Features Features: Renowned for its robust inline-six engines, sophisticated suspension, driver-focused interior, and classic BMW styling. The E28 was the first 5 Series to offer a diesel engine and an M version (M535i). 📋 Manual Details Coverage Areas Coverage: Complete workshop service and repair for BMW 535i and M535i E28 models. Page Count Estimated Page Count: Approximately 1000+ pages (typical for comprehensive workshop manuals of this era). Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: Downloadable Digital Format (PDF, likely with searchable text) 📖 Manual Coverage Systems Covered Engine: Engine mechanical (M30B34/B35), fuel injection (L-Jetronic/Motronic), ignition system, cooling system, lubrication system, exhaust system. Transmission: Manual and automatic transmission service, repair, and overhaul. Drivetrain: Driveshaft, differential, axle shafts, wheel bearings. Suspension: Front and rear suspension components, steering system, alignment specifications. Brakes: Front and rear brake systems (disc brakes), ABS (if equipped), hydraulic system. Electrical: Wiring diagrams, electrical components, lighting, instrumentation, power accessories, battery, alternator, starter. Body: Body panel removal and installation, doors, windows, sunroof, interior trim, HVAC system. Procedures Included Maintenance: Scheduled maintenance, oil changes, fluid checks and replacements, filter changes, spark plug replacement. Repair: Engine overhaul, transmission rebuild, brake caliper replacement, suspension component repair, electrical component diagnosis and replacement. Troubleshooting: Diagnostic procedures for common and uncommon issues, fault codes (where applicable). Technical Specifications: Torque specifications, clearances, fluid capacities, electrical values. Special Tools: Identification and usage of specialized tools required for specific repairs. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures. 📊 Manual Specifications File Format Format: Digital Download (PDF recommended for searchability and printing). Print Quality Quality: High-resolution scans, clear text, legible diagrams and illustrations. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code 535I: M30B34 (3.4-liter inline-six) Engine Code M535I: M30B35 (3.5-liter inline-six) Performance 535I Horsepower: Approximately 182-218 hp (depending on market and specific tune). Torque: Approximately 214-228 lb-ft. Performance M535I Horsepower: Approximately 211-252 hp (depending on market and specific tune, often higher for Euro-spec). Torque: Approximately 232-265 lb-ft. Fuel System System: Bosch L-Jetronic or Motronic fuel injection systems. Cylinder Block Material: Cast iron Cylinder Head Material: Aluminum alloy Valvetrain Configuration: SOHC (Single Overhead Camshaft), 2 valves per cylinder 🔧 Transmission Standard Transmission Type: 4-speed or 5-speed manual transmission (Getrag). Optional Transmission Type: ZF 4HP22 automatic transmission. Features Clutch: Hydraulically actuated single dry plate clutch. Fluid Type Manual: BMW ATF Dexron II or equivalent. Automatic: BMW ATF Dexron II or equivalent. 📐 Dimensions Exterior Length Length: Approx. 188.5 inches (4790 mm) Exterior Width Width: Approx. 68.1 inches (1730 mm) Exterior Height Height: Approx. 55.1 inches (1400 mm) Wheelbase Wheelbase: Approx. 103.7 inches (2630 mm) Weights Curb Weight: Approx. 3200-3400 lbs (1450-1540 kg), varies by model and equipment. 🛡️ Safety Features Ratings Crash Testing: E28 models predate modern standardized crash testing. Safety features focused on structural integrity, crumple zones, and occupant restraint. Active Features ABS: Anti-lock Braking System (ABS) was an available option on later models. Passive Features Seatbelts: 3-point seat belts with pretensioners (early models may have manual adjustment). Airbags: Driver airbag was not standard on early E28s; became available on later models. Steering Column: Collapsible steering column for improved impact protection. 💡 Technology Features Infotainment Audio System: Factory cassette player with AM/FM radio, often with upgraded speaker systems (e.g., Blaupunkt or Harman Kardon). Driver Assistance Cruise Control: Standard cruise control system. Climate Control: Manual or optional automatic climate control ('ECC'). Connectivity Connectivity Options: Limited by era; primarily analog systems. Later models offered optional power windows, locks, mirrors, and sunroof. 🔧 Maintenance Service Intervals Oil Change: Every 7,500-10,000 miles or annually, whichever comes first (using high-quality synthetic oil is recommended). Spark Plugs: Replace every 30,000-50,000 miles depending on plug type (e.g., copper vs. platinum). Consult manual for specific recommendations. Coolant Flush: Every 2-3 years or 30,000-50,000 miles. Fluid Specifications Engine Oil: API SG or higher, SAE 5W-30 or 10W-40 (check manual for specific viscosity based on temperature). Coolant: BMW Blue or Green coolant concentrate mixed 50/50 with distilled water. Brake Fluid: DOT 3 or DOT 4. Known Issues Fuel System: Fuel accumulator failure, leaking fuel injectors, worn fuel pump relays, cracked fuel lines. Engine: Head gasket leaks (especially on higher mileage engines), worn...