Adds more octane than leading bottled brands. Lab tested. Faster acceleration. Eliminates knock and ping. Ideal for vintage engines. Begins to work immediately! Fast-Dissolving. Lab tested. Dissolves fully in 18 minutes. No carrier fluid. Typical bottled octane boosters 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. Octane Booster in tablet form. Track tested to be 9.2% faster, Dyno-tab Maximum Strength Octane Booster provides faster acceleration. Adding the correct dosage at fill-up can give you a 10 point boost in your octane rating and additional tablets can increase it 17 points! Fast dissolving and safe for catalytic converters and oxygen sensors, Dyno-tab High Performance Octane Booster has been shown to ‘beat the bottled boosters’ in independent lab tests. Please follow dosage instructions on package.