Positioning:
The BMW 518i (E28) was positioned as an entry-level model in BMW's executive sedan lineup, offering a balance of performance and economy for its era.
Competitors:
Competed with other mid-size luxury sedans such as the Mercedes-Benz W124 200E/230E, Audi 100, and Jaguar XJ6.
Vehicle Appeal:
Known for its understated luxury, refined driving dynamics, build quality, and efficient yet capable M10 engine.
Value Proposition:
Essential for owners and technicians seeking to maintain, repair, or restore the 1987 BMW 518i (E28), providing factory-level accuracy and detail.
Engine:
M10B18 (4-cylinder, single overhead camshaft, Bosch L-Jetronic fuel injection)
Engine Management:
Bosch L-Jetronic fuel injection system diagnosis and repair, ignition system, emissions control
Transmission:
Manual (Getrag 260), Automatic (ZF 4HP22)
Drivetrain:
Rear-wheel drive, driveshaft, differential, axle shafts
Suspension:
Front: MacPherson struts, independent, control arms. Rear: Semi-trailing arms, independent, coil springs, shock absorbers
Brakes:
Front: Ventilated discs. Rear: Solid discs. ABS (optional, depending on market and specific build).
Steering:
Recirculating ball steering system, power steering system (if equipped)
Electrical:
Full wiring diagrams, alternator, starter, battery, lighting, instrumentation, accessories, fuse box layout, relays
Body:
Body shell, doors, hood, trunk, glass, body panels, interior trim, seals
HVAC:
Heating, ventilation, and air conditioning system (if equipped)
Chassis:
Frame, subframes, mounts, body reinforcements
Maintenance:
Oil change, filter replacement, spark plug replacement, coolant flush, brake fluid change, tune-up procedures, belt inspection/replacement
Repair:
Engine overhaul (top-end and bottom-end), transmission rebuild, clutch replacement, brake caliper overhaul, suspension component replacement, steering rack repair, fuel system component replacement, starter/alternator repair
Diagnostics:
Troubleshooting charts for common problems, diagnostic procedures for engine performance, electrical faults, HVAC issues
Troubleshooting:
Step-by-step diagnostic flowcharts for various systems
Specifications:
Torque values for all fasteners, clearances, fluid capacities, electrical specifications
Depth:
Comprehensive, suitable for professional mechanics and advanced DIY enthusiasts. Covers full rebuilds and in-depth diagnostics.
Engine Type:
Inline 4-cylinder, naturally aspirated
Displacement:
1.8 Liters (1766 cc)
Bore X Stroke:
89.0 mm x 71.0 mm
Compression Ratio:
8.8:1 (typical)
Horsepower:
90 PS (89 bhp; 66 kW) at 5400 rpm (European spec)
Torque:
140 Nm (103 lb-ft) at 3250 rpm (European spec)
Fuel Delivery:
Bosch L-Jetronic Electronic Fuel Injection
Fuel Type:
Unleaded gasoline (RON 91-95)
Ignition System:
Electronic ignition (Bosch)
Coolant Type:
Ethylene glycol based antifreeze (BMW recommends BMW coolant or equivalent)
Oil Type:
API SG/CD, SAE 15W-40 or 10W-40 (check manual for specific climate recommendations)
Oil Capacity:
4.5 Liters (4.8 US quarts) with filter change
Type:
4-speed Manual (Getrag 260)
Type:
3-speed Automatic (ZF 4HP22) - Likely optional
Manual Gear Ratios:
Refer to manual for specific ratios (e.g., 1st: 4.01:1, 2nd: 2.38:1, 3rd: 1.48:1, 4th: 1.00:1, Reverse: 3.17:1)
Manual Transmission Fluid:
API GL-4, SAE 75W-90 or 80W-90
Automatic Transmission Fluid:
Dexron II or equivalent
Audio System:
Factory-installed AM/FM radio with cassette player, basic speaker system.
Controls:
Manual climate controls, basic dashboard instrumentation.
ABS Availability:
Optional ABS system, providing advanced braking control for its time.
Original Connectivity:
N/A (no modern connectivity features like Bluetooth, USB, etc.)
Oil Change:
Every 10,000 km (6,000 miles) or 12 months, whichever comes first (typical recommendation, refer to manual for precise interval).
Air Filter:
Inspect every 20,000 km (12,000 miles), replace as needed or every 40,000 km (24,000 miles).
Spark Plugs:
Replace every 20,000-30,000 km (12,000-18,000 miles) depending on plug type (refer to manual for exact spec).
Coolant Flush:
Every 2 years or 40,000 km (24,000 miles)
Brake Fluid:
DOT 3 or DOT 4
Power Steering Fluid:
Dexron II or equivalent
Common Problems:
Fuel distributor issues, fuel pump wear, vacuum leaks, rust (especially around wheel arches and rocker panels), aging rubber components (bushings, hoses), instrument cluster failure, sunroof drain blockage, blower motor resistor failure.
Oil Filter Example:
Mann-Filter W930/20 or equivalent (specific part number to be confirmed in manual)
Air Filter Example:
Mann-Filter C27130 or equivalent
Spark Plug Example:
Bosch W8AC or Champion N9YCC (check manual for precise spec)
Bmw Philosophy:
BMW's reputation for building driver-focused, well-engineered, and reliable vehicles.
E28 Generation:
The E28 generation of the 5 Series was produced from 1981 to 1988, succeeding the E12 and being succeeded by the E34. It was a significant evolution in BMW's executive sedan design.
Manufacturing Period:
1981-1988
Manufacturing Location:
Dingolfing, Germany
518I Introduction:
The 518i served as the base model for many markets, offering a more accessible entry into the 5 Series range.