1990 Mercedes-Benz 560SEL Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 Mercedes-Benz 560SEL
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1990 Mercedes-Benz 560SEL ProblemsTransmission Oil Seals May Leak on High Mileage Vehicles
High mileage vehicles may develop a transmission fluid leak from one or more of the oil seals.
A rough running motor or lack of power can be caused by a failed distributor cap or rotor, ignition wires (or their resistors), or valve cover gasket leaks. If the valve cover gasket leaks, oil can pool where the ignition wire resistor connects to the spark plug. The resistor can fail and the spark plug may not fire because of a short circuit through the oil.
Valve stem seals may wear and cause the engine to burn oil. this can contaminate the catalytic converter and cause it to fail.
1990 Mercedes-Benz 560SEL Questionswhat are signs that the manifold gaskets are leaking (1 answer)
In looking over the car I recently bought -- 1990 560SEL with 114,000 miles -- when I had the brakes redone the shop I went to told me they detected leaks in the manifold gaskets. I have no performance issues, not sure I trust the shop who I think thinks I am a little old lady who knows nothing a...
why engine oil can run into my car steering box