Rislone Petrol Fuel System Treatment is made to improve the quality of petrol by increasing its cleaning ability, adding lubrication, removing contaminants, reducing spark knock, and helping to prevent the fuel from going bad. This dual cavity bottle contains the same amount of additives equal to a bottle of regular fuel injector cleaner, upper cylinder lubricant, fuel stabilizer, petrol dryer, petrol treatment and octane booster. In other words, this is one powerful bottle. This product increases power, performance, mileage and saves you petrol by cleaning and lubricating the complete fuel system.