Does a Bad Catalytic Converter Affect the Engine Oil?

Mechanic checking the quality of engine oil, which can be affected by a failing catalytic converter.

A catalytic converter is a critical component of your vehicle’s exhaust system, designed to reduce harmful emissions. When it becomes faulty, it can lead to a variety of issues throughout the vehicle, including potential effects on the engine oil. Understanding how a bad catalytic converter can impact engine oil is crucial for diagnosing problems early and maintaining your vehicle’s performance …

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