1986–1991 Mercedes-Benz 420SEL
Common problems, technical service bulletins, fluid specs and labor times — verified for your car.
Top Problems (5)
Faulty Fuel Pump
high
AI-written
Power Steering Failure
high
AI-written
Transmission Problems
high
AI-written
Water Leaks
medium
AI-written
Electrical Issues
medium
AI-written
Active Service Bulletins
— Valve Springs R & I: Installation
Engine Mechanical
— Ignition Timing Control
Engine Performance
— Emission Control Abbreviations: "N"
General Information
— Wheel Alignment Theory & Operation - General Information: Adjustments: Notes
General Information
Key Fluid Specs
| Spec | Value |
|---|---|
| Percentage Of Anticorrosion/antifreeze For Protection Down To: | -30 |
| Total Refrigerant Oil Capacity | 120 |
| Total Capacity | 1300 |
| Refrigerant Type | R-12 |
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