How often should I use Fuel Doctor?

Fuel Doctor should be used with every tank fill-up in order to maximize its benefits. It is recommended to use Fuel Doctor each time you refuel your vehicle to ensure consistent results and maintain optimum fuel efficiency. By adding Fuel Doctor to your fuel tank at every fill-up, you can help improve gas mileage, reduce emissions, and extend the lifespan of your vehicle's engine. Using Fuel Doctor regularly will help keep your engine clean and running smoothly, resulting in better performance and potential cost savings in the long run. Make Fuel Doctor a part of your routine fueling process to experience its full effectiveness.