How often should I use fuel injector cleaner to maintain optimal engine performance? Is it really beneficial to incorporate this cleaning regimen into my vehicle’s maintenance schedule? Many car enthusiasts and novices alike ponder the correct frequency of this process. Given the myriad of factors that affect fuel injector functionality—such as the type of fuel used, driving conditions, and the owner’s maintenance habits—how can one ascertain the ideal timing for such a procedure? Should it be a routine part of my car care, perhaps every few thousand miles, or should I reserve it only for instances of noticeable engine performance decline or fuel inefficiency? Furthermore, could excessive use of fuel injector cleaner lead to adverse effects, potentially harming sensitive engine components? How can I strike that delicate balance between ensuring cleanliness and avoiding over-treatment? Exploring these queries might illuminate the nuanced relationship between fuel injectors and engine health.