🏷️ Basic Information Identification Make: BMW Model: 525i Year Start: 1989 Year End: 1995 Generation Generation Designation: E34 📋 Manual Details Coverage Areas Engine Mechanical: Included Engine Electrical: Included Fuel System: Included Ignition System: Included Cooling System: Included Exhaust System: Included Transmission Manual: Included Transmission Automatic: Included Drivetrain: Included Suspension: Included Steering: Included Brakes: Included Body And Chassis: Included Interior Components: Included Electrical System: Included Heating Ventilation Air Conditioning HVAC: Included Wiring Diagrams: Included Diagnostic Troubleshooting: Included Specifications And Tolerances: Included Maintenance Procedures: Included Page Count Number Of Pages: Hundreds Manual Type Type: Factory Service Repair Manual Language Language: English Format Format: PDF Download ⚙️ Engine Specifications Primary Engine Engine Code: M30B35 (Commonly found in 535i, but 525i typically used the M20B25) Engine Displacement: 2.5 Liters (2494 cc) Engine Configuration: Inline 6-cylinder (I6) Engine Aspirated: Naturally Aspirated Engine Block Material: Cast Iron Engine Cylinder Head Material: Aluminum Performance Horsepower Est Range: 170-190 hp Torque Est Range: 200-230 lb-ft Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) Fuel Type: Unleaded Premium Gasoline (91 Octane or higher recommended) 🔧 Transmission Standard Transmission Type Standard: 5-speed Manual Optional Transmission Type Optional: 4-speed Automatic (ZF 4HP22) Features Drive Type: Rear-Wheel Drive (RWD) 📐 Dimensions Exterior Length: Approximately 188 inches Width: Approximately 70 inches Height: Approximately 56 inches Wheelbase: Approximately 110 inches Weights Curb Weight Est Range: 3500-3700 lbs 🛡️ Safety Features Ratings Crash Test Era: Pre-modern crash safety standards Features Airbags: Driver's side airbag (standard on later models, optional/unavailable on early models) Anti Lock Brakes ABS: Standard on most models during this period Seatbelts: Three-point front and rear seatbelts Headlights: Halogen headlights Immobilizer: Basic anti-theft systems, not a sophisticated immobilizer in modern terms 🔧 Maintenance Service Intervals Oil Change Interval Km Miles: 7,500 - 10,000 km / 5,000 - 7,500 miles (or per manual recommendation) Air Filter Replacement Interval Km Miles: 30,000 - 50,000 km / 20,000 - 30,000 miles Spark Plug Replacement Interval: Approximately 60,000 miles Fluid Specifications Engine Oil Type: SAE 20W-50 or SAE 15W-40 (verify with manual) Coolant Type: BMW Blue Antifreeze or equivalent (Ethylene Glycol based) Brake Fluid Type: DOT 3 or DOT 4 Transmission Fluid Type Manual: SAE 75W-90 Synthetic Gear Oil (verify with manual) Transmission Fluid Type Automatic: ATF Dexron III or equivalent (verify with manual)