Check the listing for details. PowerMaxx Octane Booster Gasoline Additive Treatment 300 Ml. Condition: New, Made in Germany. Listed at 66.45 USD. PowerMaxx Octane Booster is a unique product designed to safely and efficiently increase the octane rating of gasoline. By increasing your octane rating you will gain several benefits, such as reduced engine pinging (helps prevent very expensive engine repairs), increased power and fuel economy. This effect can be observed for both turbocharged and naturally aspirated engines. Suitable for all types of petrol engines, including Turbo, naturally aspirated or supercharged, works well with high performance engines. Suitable for catalytic converters. Powermaxx Octane Booster can be used to improve the quality of low quality fuel, avoiding costly engine and fuel system repairs. Use is very simple: just pour the contents of the bottle (300 ml) into the tank before refueling. Refuel and.