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

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

RepairPal Verified
Average mileage: 237,598 (237,598–237,598)
2 model years affected: 1990, 1991
3 people reported this problem
The nation’s largest network of independent repair shops certified for expert training, quality work and fair pricing
Viewing
1
-
1
of
1
problem details
1990 Mercedes-Benz 560SEC 237,598 mi,
Buring too much oil, catalytic no long functional.