🏷️ Basic Information Identification Make: BMW Model: 525i Chassis Code: E34 Product Type: Service Repair Manual Product Format: PDF Codes Bmw E34 Codes: Various, including internal BMW codes for options and specific model variants. 📋 Manual Details Coverage Areas Vehicle Years: 1988-1991 Content Scope: Repair, Maintenance, Rebuild, Refurbish, Restoration Page Count Approximate Pages: Hundreds Manual Type Unknown: Comprehensive Service and Repair Language Unknown: English ⚙️ Engine Specifications Primary Engine Engine Code: M20B25 Engine Type: Inline 6-Cylinder Displacement: 2.5 Liters (2494 cc) Bore: 84.0 mm Stroke: 75.0 mm Compression Ratio: 8.5:1 Valvetrain: SOHC, 12 Valves (2 per cylinder) Performance Horsepower Approx: 168-170 hp @ 5800 rpm Torque Approx: 164-167 lb-ft @ 4300 rpm Fuel System Fuel Delivery: Bosch Motronic Fuel Injection (typically Motronic 1.3) Fuel Type: Unleaded Gasoline Cooling System Cooling Type: Water-Cooled 🔧 Transmission Standard Transmission Type: 5-Speed Manual Optional Transmission Type: 4-Speed Automatic (ZF 4HP22) Features Clutch: Hydraulic Actuation 📐 Dimensions Exterior Wheelbase: 2770 mm (109.1 inches) Length: 4730 mm (186.2 inches) Width: 1750 mm (68.9 inches) Height: 1410 mm (55.5 inches) Weights Curb Weight Approx: 1490-1570 kg (3285-3461 lbs) 🛡️ Safety Features Ratings Crash Test Information: Information not readily available for this vintage vehicle, but known for robust chassis construction. Features Airbags: Driver-side airbag typically standard from 1988/1989 onwards; passenger airbag optional/not always present Antilock Brakes: Standard on most models Seatbelts: Front and rear seatbelts Lighting: Halogen headlights, front and rear fog lights (optional/depending on market) 🔧 Maintenance Service Intervals Oil Change Interval Approx: 7,500-10,000 miles or 12 months Spark Plug Replacement Interval Approx: 30,000 miles Fluid Specifications Engine Oil Type: Synthetic or Semi-Synthetic SAE 15W-40 or 10W-40 (check manual for exact viscosity and API rating) Coolant Type: BMW Blue Antifreeze/Coolant or equivalent ethylene glycol-based coolant (50/50 mix) Brake Fluid Type: DOT 4 Transmission Fluid Type Manual: GL-4 SAE 75W-90 or 80W-90 Gear Oil Transmission Fluid Type Automatic: Dexron II or equivalent ATF (check manual for specific type) Power Steering Fluid Type: Pentosin CHF 11S or compatible hydraulic fluid