Dyno-tab Fuel Treatment is a safe, fast dissolving fuel additive in tablet form that is made from 100% active ingredients. Dyno-tab eliminates the fluid carrier component of most fuel additives and dramatically reduces transportation costs, storage requirements and packaging waste. In this regard, Dyno-tab is better for the environment. Dyno-tab fuel treatments contain a combustion catalyst that, when added to fuel, produces a cleaner and more complete fuel burn. In addition, Dyno-tab inhibits the buildup of carbon deposits within the combustion chamber and on exhaust valve surfaces, which rob your engine of power and performance. Dyno-tab is added directly to the fuel tank at fill-up where it dissolves quickly and completely. Dyno-tab is designed to: Increase power and performance Boost octane Help improve fuel economy Reduce smoke and exhaust emissions Eliminate ‘knock’ & ‘ping’ Inhibit carbon deposits As with any additive, results will vary. Dyno-tab is registered with the EPA and is safe and effective for all gasoline and diesel engines. It will not harm catalytic converters or oxygen sensors.