Octane Booster Ravenol. Petrol Octane Booster is an additive to increase the octane rating up to four points for low-grade or insufficient fuel quality. It improves combustion and thus increases the service life of the entire fuel system. RAVENOL Petrol Octane Booster prevents engine noise such as ringing, banging or retarded engine ignition. RAVENOL Petrol Octane Booster improves handling performance in peak ranges. Application Note RAVENOL Petrol Octane Booster is added to the petrol before refueling. Area of application: Petrol-operated engines Low-grade fuel For performance enhancement Application: The ideal dosage is a can of RAVENOL Petrol Octane Booster per 60 to max. 75 litres of petrol. RAVENOL Petrol Octane Booster prevents wear and tear on valve seats and discharge valves and in doing so, increases the service life of the entire fuel system Characteristics Increased octane rating up to four points Improved engine performance Improves acceleration Fine-tunes combustion *By request/order.