Catalytic Converter Failure Due to Engine Burning Oil on Mercedes-Benz 560SEC

Problem Description and Possible Solution

Valve stem seals may wear and cause the engine to burn oil. this can contaminate the catalytic converter and cause it to fail.

Problem Data
RepairPal Verified
Average mileage: 237,598 (237,598–237,598)
2 model years affected: 1990, 1991
3 people reported this problem
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Buring too much oil, catalytic no long functional.