Rislone Octane Booster 177ml If you're all about high performance then you know your car, like you, can use an energy boost from time to time. Our Rislone Super Concentrated Octane Booster does just that. This formula works like an energy drink to give your car the added push that will get it over the line faster. Rislone Super Concentrated Octane Booster increases fuel's octane rating to stop engine hesitation and knock and ping, while also increasing power and performance. The formula works equally well on classic muscle cars, newer, smaller, harder-working engines, off-road and racing applications. The increased octane allows the engine to run optimum spark timing, which not only creates more power, but in many engines reduces emissions and increases fuel mileage.