What common maintenance practice can lower a vehicle’s emissions?

Frequent oil changes play a crucial role in lowering a vehicle’s emissions. Over time, engine oil can break down and become contaminated with dirt, sludge, and other particulates. When the oil is degraded, it can lead to increased friction and inefficient engine operation, which can result in incomplete combustion of fuel. Incomplete combustion often produces higher amounts of harmful emissions, including hydrocarbons and carbon monoxide.

When oil is changed regularly, the engine runs more smoothly and efficiently, allowing it to operate at optimal temperatures and conditions. This improved efficiency helps to ensure that the fuel is burned more completely, thereby reducing the amount of unburned fuel that exits through the exhaust system. Furthermore, clean oil helps keep engine components lubricated, reducing wear and tear, which can also contribute to lower emissions over time.

While other maintenance practices like tire rotations may contribute to better overall vehicle performance and fuel economy, they do not have as direct an effect on emissions as regular oil changes do. Similarly, washing the vehicle and cleaning the interior, although beneficial for aesthetic reasons, have no impact on emissions reduction.