Fuel additive K2 E10 Neutralizer 50ml improves fuel quality and reduces the negative effects of using fuels containing bioethanol (e.g. E10). Designed to compensate for the deteriorated quality of fuels with up to 10% ethanol content due to faster fuel aging. Fuel additive used during each refueling. which stabilizes the fuel. cleans and protects the fuel system from corrosion caused by bioethanol. protects valve seats and increases octane number. It can be added to all types of gasoline. also with other additives. in both gasoline and hybrid cars.