How often should I change my engine air filter? It’s a question that perplexes many vehicle owners, often leaving them puzzled about the right maintenance schedule for their cars. Could it be every few thousand miles, or maybe only when I notice a dip in performance? When it comes to the engine air filter, its role is crucial yet frequently underestimated. It serves as a guardian of sorts, preventing contaminants from infiltrating the engine’s delicate workings. But how do I ascertain when it’s time for a replacement? Is it sufficient to rely on the manufacturer’s recommendations, or should I consider environmental factors such as dusty roads or urban driving conditions? If my car’s engine performance diminishes, could that be a signal indicating the filter’s inefficiency? Ultimately, what are the signs I should be keenly aware of, and how can I ensure that I’m not neglecting this vital aspect of my vehicle’s upkeep?