Dyno-tab PLUS is a multifunctional fuel additive that combines the benefits of Dyno-tab Fuel Treatment with a powerful detergent/dispersant that fights the harmful effects of fouled fuel injectors. Begins to work immediately! Fast-Dissolving. Lab tested. Dissolves fully in 18 minutes. No carrier fluid. Typical bottled injector cleaners contain up to 98% petroleum solvent/carrier fluid. Safe to use. Sold in the US and around the world since 1995. US EPA registered for on-road use. 100% active ingredients. No Bottle - No Measuring - No Mess. Injector Cleaner in tablet form.