A silencer, also known as a muffler, is a component of the exhaust system in an engine. Its primary function is to reduce the noise produced by the engine's combustion process.

Points to using a catalytic converter correctly in winter, and ways to maintain a catalytic converter.

A catalytic converter is an essential component of a vehicle's exhaust system that helps to reduce the emissions of harmful pollutants such as carbon monoxide, nitrogen oxides, and hydrocarbons. It achieves this by using a series of chemical reactions to convert these pollutants into less harmful substances before they are released into the atmosphere.