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.