Menu Frequently Asked Questions What is Fuel System Restorer? It's a technologically advanced fuel system cleaner designed to safely remove all types of combustion deposits (gum, varnish, and carbon) throughout the entire fuel system. Thoroughly cleans fuel injectors, intake valves, and combustion chambers. Why should I use Fuel System Restorer? Clearing out clogged fuel injectors, removing deposits from intake valves, and cleaning the inside of combustion chambers restores your engine to more effective and efficient air/fuel mixture fluid dynamics which optimizes the combustion process. What are the benefits of using Fuel System Restorer? Noticable improvements in your car's engine will be some or all of the following: Better throttle response Faster, more powerful acceleration Smoother idle and operation Cleaner exhaust emissions Better fuel mileage More engine power Improved driving performance. Will Fuel System Restorer help my car pass emissions testing? Yes, since many vehicles fail emissions testing due to improper combustion. A clean fuel system means your car’s engine will burn fuel more efficiently with less pollution. Is Fuel System Restorer safe to use in my engine? Yes, it is safe and effective in all gasoline engines. It will not harm oxygen sensors or catalytic converters. How often should I use Fuel System Restorer? In order to keep your fuel system clean and free of combustion deposits, we recommend using it every 3,000 miles. One bottle treats up to 25 gallons of gasoline. For best results, add right before filling the gasoline tank then fill tank to FULL. Can Fuel System Restorer be used at the same time as Engine Restorer? Yes, we recommend using both products to restore maximum engine performance. © Restore Inc.