What type of maintenance is most effective in prolonging a vehicle's life?

Regular oil changes and timely replacement of worn parts are crucial for maintaining a vehicle's engine health and overall performance. Engine oil lubricates moving parts, reduces friction, and carries away contaminants. Over time, oil breaks down and becomes less effective, making regular changes essential to ensure the engine operates smoothly. Additionally, components such as filters, spark plugs, and belts can wear out, leading to potential breakdowns or reduced efficiency. Replacing these parts as needed prevents more extensive and costly repairs later on and helps to maintain optimal performance.

In contrast, while cleaning the interior of a vehicle contributes to its aesthetic and comfort, it doesn’t significantly impact the mechanical reliability or longevity of the vehicle. Using premium gasoline may improve performance in some engines designed for it, but for the majority of vehicles, it does not necessarily prolong lifespan. Driving at lower speeds consistently can enhance fuel economy, but it does not provide comprehensive maintenance benefits to the vehicle itself. Therefore, regular oil changes and the timely replacement of worn parts stand out as the most effective practices for prolonging a vehicle's life.